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Scalable multipartite entanglement achieved with ultracold atoms in optical lattice –

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peer-reviewed publication


by Chen Yehong , University of Science and Technology of China


Researchers from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), in collaboration with researchers from Tsinghua University, led by Ma Xiongfeng, and Fudan University, led by Zhou You, have achieved significant advancements in the preparation and measurement of scalable multipartite entangled states.

Using ultra-cold atoms trapped in optical lattices, the research team successfully prepared multi-atom entangled states by creating a two-dimensional atomic array, generating entangled atom qubit pairs, and sequentially connecting these entangled pairs. Their work is published in Physical Review Letters.

The American Physical Society also highlighted this achievement with a feature in Physics Magazine titled "Milestone for Optical-Lattice Quantum Computer."

Quantum entanglement is fundamental phenomenon underlying quantum computing, the capabilities of which grow exponentially with the increase in the number of entangled qubits. Therefore, the preparation, measurement and coherent manipulation of large-scale entangled states are central challenges in the field of quantum research.

Among the physical systems used to implement quantum bits (qubits), ultracold atomic qubits in optical lattices exhibit excellent coherence, scalability and high-precision quantum control, which position them as an ideal choice for carrying out quantum information processing.

Since 2010, the USTC research team has systematically studied multibody phase transitions, atomic interactions and entropy distribution dynamics in optical lattices.

By 2020, the team achieved an entanglement fidelity of 99.3% with over 1,000 pairs of entangled atoms. These studies have paved the way for enhancing the fidelity of atomic entanglement and the capability of parallel atomic control, laying the foundation for larger multi-atom entangled states and further quantum computing research. However, previous efforts faced bottlenecks due to the limited ability to control individual atomic qubits, significant phase shifts in optical lattices, and a lack of effective methods for detecting and controlling multi-atom entanglement states.

To overcome these technical challenges, the team led by Pan Jianwei and Yuan Zhensheng developed a new equal-arm, cross-beam interference and spin-dependent superlattice system. They integrated self-developed single-lattice resolution, wide-band achromatic quantum gas microscopy and multiple sets of digital micromirrors for spot shape editing. This setup allowed for both multi-atom global parallel and local single grid point measurement and control.

With this, they achieved a 99.2% filling rate of a two-dimensional atomic array and prepared entangled Bell states with an average fidelity of 95.6% and a lifespan of 2.2 seconds. Furthermore, they connected adjacent entangled pairs to prepare a 10-atom one-dimensional entangled chain and an eight-atom two-dimensional entangled block.

This work marks a significant step toward large-scale quantum computation and simulation using optical lattices.

More information: Wei-Yong Zhang et al, Scalable Multipartite Entanglement Created by Spin Exchange in an Optical Lattice, Physical Review Letters (2023). DOI: 10.1103/PhysRevLett.131.073401

Journal information: Physical Review Letters

Provided by University of Science and Technology of China

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Higher harmonics and supercontinuum generated from the Kerr … –

Following Kerr21, Buckingham22, 23, Duguay28, and Alfano et al.1, 4, the general form for the index of refraction based on the index of refraction becomes electric field E dependent:

$$n= {n}_{0 }+ {n}_{2}{E(t)}^{2},$$


where n0 is the index of refraction, n2 is the nonlinear index from various mechanisms, and E is the electric field. Our ansatz is that the index of refraction (n) is a function of angular frequency () and time (t): n(,t).

In the EM model, the Kerr index of refraction n2 of the material depends on the time response of the underlying mechanisms of the material to the electric field of the laser:({n}_{2}= sum_{i}{n}_{i}), where i=mechanisms (such as electronic (~1017s), molecular redistribution (~1014s), plasma (~1013s), rotational (~1012s), librational, and other slower mechanism)28,29,30,31,32. The work of KenneyWallace showed the various temporal components of the Kerr index in CS231, 32.

Based on the Kerr effect, the electric field of the light is distorted in the CEP after an intense light beam propagates a distance z into the material and the electric field of the light has the form:

$$begin{aligned} Eleft( {t,omega } right) = & E_{0} e^{{ - frac{{t^{2} }}{{T^{2} }}}} cosleft[ {phi left( {t,omega } right)} right] \ = & E_{0} e^{{ - frac{{t^{2} }}{{T^{2} }}}} cosleft[ {omega _{0} t - kz + varphi } right], \ end{aligned}$$


where the exponential time is T = (frac{{tau }_{p}}{sqrt{2mathrm{ln}2}}); p is the full width half maximum (FWHM) of the pulse; and the bracket is the phase (upphi left(mathrm{t},omega right).) The phase (upphi left(mathrm{t},omega right)) is modulated by the index of refraction due to Kerr effect. The high laser intensity induces changes in the refractive index from electronic and molecular distortion. The propagation constant becomes time and frequency dependent: (k=frac{nomega }{c}). Expanding about ({upomega }_{0}), the modulated instantaneous phase of Carrier Envelope Phase (CEP) under the envelope becomes:

$$phi left(t,omega right)= {omega }_{0}left{t-frac{nleft(t,omega right)z}{c}right}+varphi ,$$


where ({upomega }_{0}) is the central angular frequency of the laser, n(t,) is the refractive index, z is the propagating distance, and is the offset phase (set (varphi =0)). This phase is the key for the generation of the Supercontinuum and Higher Harmonics where the response time of the materials index of refraction is critical to the generation of HHG. The offset CEP phase is set to be zero for the cosine-like pulse which drives HHG modes. The nonlinear refractive index with quadratic field dependence and the material response time is given by:

$$nleft(tright)={n}_{0}+{int }_{-infty }^{t}{int }_{-infty }^{t}fleft({t}{prime},{t}^{{prime}{prime}}right)Eleft(t-{t}{prime}right)Eleft(t-{t}^{{prime}{prime}}right)d{t}{prime}d{t}^{{prime}{prime}},$$


where n0 is the ordinary index, E the electric field and,

$$fleft({t}{prime},{t}^{{prime}{prime}}right)=left(frac{{n}_{2}}{tau }right){e}^{- frac{{t}{prime}}{tau }} delta left(t-{t}^{{prime}{prime}}right).$$


Here, n2 is the nonlinear index and is the response time (tau). Equation(4) may be simplified to:

$$nleft(tright)= {n}_{0}+ left(frac{{n}_{2}}{tau }right){int }_{-infty }^{t}{e}^{- frac{left(t-{t}{prime}right)}{tau }}{E}^{2}left({t}{prime}right)d{t}{prime}.$$


The pure electronic mechanism of n2 is the instantaneous index of refraction for rare noble gases like Ar, Kr, and Ne and solids involving no translation of nuclei or rotation of atomic cluster. It is expected to have relaxation response time much less than the optical period (<<(frac{1}{{omega }_{0}})), faster than few femtoseconds. For this case, the index n(t) responses to E(t) at optical frequencies. Hence the weighting function ((frac{1}{tau }){e}^{- frac{left(t-{t}{prime}right)}{tau }}) may be replaced by (updelta left(mathrm{t}-{mathrm{t}}^{mathrm{^{prime}}}right)). Following the Kerr effect, the electronic response of the instantaneous response time on 50fs nonlinear index for ultrafast laser pulses causes the HHG and responsible for ESPM to become:

$${n}_{instantaneous}(t)={n}_{0}+{n}_{2}{[{E}_{0}{e}^{- frac{{t}^{2}}{{T}^{2}}}cosphi left(tright)]}^{2}.$$


Equation(7) represents the instantaneous response of the index of refraction. This is the ansatz that has been used before in the form of n by luminaries like Kerr21 and Buckingham22. The ansatz n(t) follows the modulation optical cycles of the phase of E. The instantaneous response is used to follow the optical cycle rather than the envelope of the CEP without time averaging was proposed by Buckingham22. On the other hand, the average index of refractionfollowing the envelope of the electric field will reveal the supercontinuum without HHG.

The general form for the nonlinear refractive index with quadratic field dependence is,

$$nleft(tright)={n}_{0}+delta n= {n}_{0}+ {int }_{-infty }^{t}f({t}{prime},t){E}^{2}left({t}{prime}right)d{t}{prime},$$


where n0 is the normal index, E(t) is the laser electric field assumed to have a Gaussian envelope (({E}_{0}left(tright)={E}_{0}{e}^{-frac{{t}^{2}}{{T}^{2}}})) and f(t) is the weighting function describing the response of the system; f(t) assumes the form (frac{{e}^{-frac{t}{T}}}{tau }) where is the response time of the material. The incident lasers electric field has the form given by Eq.(2). Following the ESPM model for the electric field E(t) gives:

$$Eleft(tright)={E}_{0}{e}^{- frac{{t}^{2}}{{T}^{2}}}cosleft(omega t-frac{omega nleft(tright)z}{c}right),$$


with the instantaneous n(t):

$$nleft(tright)={n}_{0}+{n}_{2}{[{E}_{0}{e}^{- frac{{t}^{2}}{{T}^{2}}}cosleft({omega }_{0}tright)]}^{2}.$$


Using an averaging procedure on n(t) to simulate the generation of the signal caused by the material response resulting in HHG and the associated characteristics that can be found in the experimental results such as the number of odd harmonics and the cutoff frequency.

We have numerically applied an averaging procedure using response filter to the n(t) for the Kerr effect in different media:

$$=frac{1}{tau }{int }_{t}^{t+tau }nleft({t}{prime}right)d{t}{prime},$$


to generate HHG and SC for the instantaneous electronic cloud response time on about 50 as; the fast response time of ionization and molecular redistribution on about 1fs; and the slower rotational and vibrational relaxation times of 110ps or greater for different pulse durations.

After substituting Eq.(11),for a response time into Eq.(9) to get E(t), the modified electronic self-phase modulated spectral E() is obtained by the Fast Fourier Transform (FFT) technique. The spectral density S() of the phase-modulated light at is:

$$Sleft(omega right)=frac{c}{4pi }{left|E(omega )right|}^{2},$$


where E() is the Fourier transform of E(t).

For a material with response time slower than pure electronic on the order of such as molecular redistribution, plasma, librational, orientational, and vibrational motion ((t>tau >frac{10}{{omega }_{L}})), the envelope of the pulse is reflected in n(t) and no HHG is produced. For slow response time of the material , the average n(t) becomes the classical SPM following the envelope of the pulse:

$${n}_{slow}left(tright)={n}_{0}+frac{{n}_{2}}{2}{left[{E}_{0}{e}^{- frac{{t}^{2}}{{T}^{2}}}right]}^{2}.$$


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Measuring three-dimensional organization on cell surfaces with … –

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This is a summary of: Mazloom-Farsibaf, H. et al. Cellular harmonics for the morphology-invariant analysis of molecular organization at the cell surface. Nat. Comput. Sci. (2023).

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Book Review: The Lights, by Ben Lerner – The New York Times

But the speaker of The Lights turns out to be many speakers, one of whom cant help shaking his head at the literary pretensions of an earlier self:

I am trying to remember what it felt like to believedisjunction, non sequitur, injectionbetween sentences might constitutemeaningful struggle against the empiretyping away in my dorm.

The speaker of another poem, The Camperdown Elm, never left that dorm rooms story line; this alternate identity continues to make an art of discontinuity in the present:

Our children do not meanTheir numbers are up, the firefliesTo kill them when they cupAround the soft bodies, lightMusic softens featuresThe way a mild solventSoftens the acrylic, yellowing in time.

The multiple literary personalities of The Lights carry on an internal debate tournament about what poems ought to do or be. Part of me wants to say there is a mock-oratorical mode capable of vitalizing critical agency, Lerner writes, and part of me/wants to praise the maples winged samaras. Toward the books conclusion, he dreams up yet another kind of poem and struggle against empire to come:

All I need my song to one day say is you are my princess and my father and youre breathing glass, soft glass that links you, that rain outside of time is mist, is glass, and I want you to fan out and take the bridges.

Walt Whitman once claimed to contain multitudes. Lerners lucid dreamer wants a song that will mobilize those multitudes. Whitman makes multiple appearances throughout The Lights; in homage to the poet of internal contradictions, Lerner reads Crossing Brooklyn Ferry as an artwork that never quite closes the gap between heaven and earth: Its among the greatest poems and fails/because it wants to become real and can/only become prose. If only for a moment, Whitmans poem, like poetry writ large, wants to become real and can, when you read between Lerners lines.

Character is another word for typographical symbols like / or i. Symbol and character, verse and conversation, song and story coexist in the prose/poems of The Lights. Lerner populates his poetry with fictions like Emma, Rose, Marcela, Luca, Ari, Bob Lolly and Ben. Some of his speakers have no names and others, many. They tell stories, console one another and depart like visitors in a dream. A politician advises scientists to hit the body/with a tremendous, whether its ultraviolet/or just very powerful light; when you look into the box, a recovering meth addict explains of quantum physics, the cat is supposed to be alive or dead, not alive and dead; a child insists the book tucked under her pillow at bedtime will help me dream.

It takes a poet to invent characters who argue that the voice must be sung into existence. It takes a novelist to honor so many perspectives, histories and intimacies in one book. Which of us, in his moments of ambition, has not dreamed of the miracle of a poetic prose? Charles Baudelaire asked over a century ago. The poet/novelist of The Lights enlarges Baudelaires experiments in prose poetry into a multistory dream house for contemporary American readers.

An oblique stroke divides life into either/or, but it can also conjoin things as an inclusive and: poet/novelist, symbol/character. The Lights" reminds us that we are one and many: princess and father, everyone in the dream and glass, soft glass bending in long meadows.

Princess/father/everyone/glass. You could go on like this forever.

Srikanth Reddy teaches at the University of Chicago and is poetry editor of The Paris Review. His most recent book is Underworld Lit.

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Waterloo welcomes three Banting Fellowship recipients | Waterloo … – The Iron Warrior

As the University of Waterloo launches its annual National Postdoc Appreciation Week (NPAW), we celebratethreeWaterloo postdoctoral scholars have been awarded the Banting Postdoctoral Fellowship, as announced on Tuesday, August 29.

The Banting Postdoctoral Fellowships program provides funding to the very best postdoctoral applicants, both nationally and internationally, who will positively contribute to the countrys economic, social and researchbased growth.

Across Canada, 70 researchers will receive $70,000 for two years, with a total of $9.8 million awarded nationally.

The Banting Postdoctoral Fellowships support transformative research that can advance our understanding of emergent fields and address global challenges, says Dr. Jeff Casello, associate vice-president of graduate studies and postdoctoral affairs. We are thrilled to welcome these new scholars to our community.

The University of Waterloo attracts world-class postdoctoral scholars who transform and disrupt the status quo and we are always delighted to support them as they continue to pursue personal and professional goals that will have positive impacts on Canadian societys future.

We are excited to have these emerging scholars join the Faculty of Science, says Dr. Chris Houser, dean of the Faculty of Science. Their transformational research pushes the boundaries of knowledge and imagination from microbial reactions to distant galaxies, and I look forward to learning the outcomes of their research.

Meet this years Banting Fellowship recipients:

Joshua Foos Banting-funded research project is titled Understanding the quantum physics of spacetime. The twin discoveries of quantum mechanics and Einstein's theory of general relativity (our best theory of gravity) in the early twentieth century revolutionized the landscape of modern physics, giving us accurate predictions about physical phenomena from the subatomic level all the way to astronomical scales. However, combining the two theories has presented a historically difficult problem for physicists.

Dr. Foo will be working with Professor Robert Mann on a project that focuses on how to describe quantum-gravitational effects that are expected to emerge when we treat objects in general relativity (for example: black holes) as possessing quantum-mechanical properties, such as the ability to be in a superposition of two places at once.

These descriptions, in turn, will allow me to develop experimental tests that can detect the quantum features of gravity, Foo says.

The study of such systems will deepen our fundamental understanding of space and time at the quantum level and bring us closer to constructing a quantum theory of gravity. Foos research is well-placed within the broad cultural curiosity surrounding our century-long quest for a unified theory.

Ian Roberts is working with Professor Michael Hudson on a project titled Star formation quenching in galaxy clusters. We learn from Roberts project that galaxies in the universe inhabit a range of environments. Such environments span from the low densities of isolated galaxies in the field through to the extremely high galaxy densities found in galaxy clusters.

Thanks to modern astronomical surveys of millions of nearby galaxies, we now know that galaxies in high-density environments (such as clusters) tend to form far fewer stars than galaxies which are isolated in the field. This reduction in star formation is referred to as quenching.

Roberts research will address the following question: Which physical processes in clusters are responsible for quenching galaxy star formation? Specifically, Roberts will explore how the fuel for the formation of new stars (cold atomic and molecular hydrogen gas) can be removed from galaxies as they orbit around their host cluster. This removal of the fuel for star formation can in turn quench galaxies in dense environments.

This research project will make important contributions to our understanding of the process of star formation (the life of galaxies) and the eventual star formation quenching (the death of galaxies) in galaxy clusters.

Saraswati will work alongside Professor Philippe Van Cappellen on their research project titled Will rewetting Canadas degraded peatlands help mitigate climate warming? Dr. Saraswati working with Professor Philippe Van Cappellen on the project. Many countries, including Canada, have proposed and already implemented the rewetting of drained peatlands as a Nature-based Solution (NbS) to curb climate warming caused by greenhouse gas (GHG) emissions. However, whether this NbS is an effective climate change mitigation strategy remains controversial.

Only a small number of field-based GHG flux studies have clearly shown a reduction of carbon dioxide emissions from rewetted peatlands, while at the same time, providing evidence for increasing methane emissions.

The latter is worrisome because methane has a much higher radiative forcing efficiency than carbon dioxide. Emissions of GHGs from peatlands are intimately linked to the turnover of organic carbon by the resident soil microbial communities, Saraswati says.

This is why a quantitative understanding of the complex, microbially mediated reaction network underlying soil organic matter (SOM) decomposition is central to explaining the response of carbon dioxide and methane emissions from peatlands to rewetting. The functioning of this reaction network depends on the energetics of the various chemical transformation pathways involved, for example, how much energy is consumed or released as a given reaction proceeds.

Saraswatis research will use microcalorimetry to directly measure the energetic yields of reaction pathways that produce carbon dioxide and methane during SOM decomposition. A key outcome of this research will be microcalorimetric assays to quantitatively assess the degradability of SOM that will be used as input to a novel, bioenergetics-informed reaction network model of SOM decomposition.

The latter will then replace the current oversimplistic SOM reaction module in the Canadian Model for Peatlands, used for Canadas national greenhouse gas reporting and prediction.

The best and brightest are drawn to Waterloo, as evidenced by three outstanding postdoctoral researchers joining the University to pursue their Banting Postdoctoral Fellowship. Our diverse postdoctoral research community supports each other to develop academically, professionally, and personally within a collaborative environment that prioritizes well-being, growth and achievement.

Institutionally, we are also pleased to present Waterloo-specific funding opportunities:

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Neutrino-Photon Interactions: Unlocking the Mysteries of Particle … – SciTechDaily

New research has discovered new interactions between neutrinos and photons, potentially shedding light on mysteries in particle physics and solar phenomena.

Elusive fundamental particles called neutrinos are predicted to interact unexpectedly with photons under extreme conditions.

Research at Hokkaido University has revealed that elusive particles called neutrinos can interact with photons, the fundamental particles of light and other electromagnetic radiation, in ways not previously detected. The findings from Kenzo Ishikawa, Professor Emeritus at Hokkaido University, with colleague Yutaka Tobita, lecturer at Hokkaido University of Science, were published in the journal Physics Open.

Our results are important for understanding the quantum mechanical interactions of some of the most fundamental particles of matter, says Ishikawa. They may also help reveal details of currently poorly understood phenomena in the sun and other stars.

Neutrinos are one of the most mysterious fundamental particles of matter. They are extremely difficult to study because they barely interact at all with other particles. They are electrically neutral and have almost no mass. Yet they are highly abundant, with vast numbers constantly streaming from the sun and passing through the Earth, and indeed ourselves, with barely any effect. Learning more about neutrinos is important for testing and perhaps refining our current understanding of particle physics, known as The Standard Model.

A total solar eclipse, with the solar corona visible.

Under normal classical conditions, neutrinos will not interact with photons, explains Ishikawa We have revealed, however, how neutrinos and photons can be induced to interact in the uniform magnetic fields of the extremely large scaleas large as 103 kmfound in the form of matter known as plasma, which occurs around stars. Plasma is an ionized gas, meaning that all of its atoms have acquired either an excess or a deficiency of electrons, making them negatively or positively charged ions, rather than the neutral atoms that can occur under everyday conditions on Earth.

The interaction described by the researchers involves a theoretical phenomenon called the electroweak Hall effect. This is an interaction of electricity and magnetism under extreme conditions where two of the fundamental forces of naturethe electromagnetic and the weak forcesmerge into the electro-weak force. It is a theoretical concept, expected to apply only in the very high energy conditions of the early universe or within collisions in particle accelerators.

The research has derived a mathematical description of this unexpected neutrino-photon interaction, known as the Lagrangian. This describes everything known about the energy states of the system.

Kenzo Ishikawa, first and corresponding author of the study. Credit: Sohail Keegan Pinto

In addition to its contribution to our understanding of fundamental physics, our work might also help explain something called the solar corona heating puzzle, says Ishikawa. This is a long-standing mystery concerning the mechanism by which the outermost atmosphere of the sunits coronais at a much higher temperature than the suns surface. Our work shows that the interaction between neutrinos and photons liberates energy that heats up the solar corona.

In concluding remarks, Ishikawa expressed their teams aspiration: We now hope to continue our work in search of deeper insights, especially in connection with energy transfer between neutrinos and photons under these extreme conditions.

Reference: Topological interaction of neutrino with photon in a magnetic field Electroweak Hall effect by Kenzo Ishikawa and Yutaka Tobita, 12 August 2023, Physics Open.DOI: 10.1016/j.physo.2023.100174

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Experiments Support Theory for Exotic Kagome States – Physics

September 15, 2023• Physics 16, s135

The observation of Fermi pockets in the Fermi surface of exotic superconductors provides a major step toward explaining some mysterious electronic states.

One of the goals of condensed-matter physicists is to catalog and explain the wide array of electronic states that can appear in materials, improving researchers understanding of important phenomena such as superconductivity. In recent years, experimentalists have discovered several unexpected exotic electronic states in materials called kagome superconductors, prompting intense debate over the nature of these states. Now Ilija Zeljkovic of Boston College and his colleagues have discovered features in the band structures of these materials that point toward an explanation [1].

The kagome family of superconductors have lattices with sixfold rotational symmetry and transition at temperatures of 70100 K to a so-called charge-density wave (CDW) statea state with a periodically modulated charge density. Theorists have explanations for this CDW state but not for several other CDW and Cooper-pair-density wave states that have lower transition temperatures. A theory published last year proposed that small features in the materials Fermi surfaces known as Fermi pockets could be associated with the high-temperature CDW and could also generate the unexplained states through standard mechanisms [2]. But until now, no one had observed these features unambiguously.

Zeljkovic and his colleagues have imaged these pockets in three kagome superconductors. The researchers show that the pockets link to both the high-temperature, parent CDW state and to two of the lower-temperature states. These results provide the first experimental evidence supporting the theory involving Fermi pockets.

David Ehrenstein

David Ehrenstein is a Senior Editor for PhysicsMagazine.

Hong Li, Dongjin Oh, Mingu Kang, He Zhao, Brenden R. Ortiz, Yuzki Oey, Shiang Fang, Zheng Ren, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, JosephG. Checkelsky, Ziqiang Wang, StephenD. Wilson, Riccardo Comin, and Ilija Zeljkovic

Phys. Rev. X 13, 031030 (2023)

Published September 15, 2023

A demonstration that certain electron-transport processes can be tuned in a hybrid semiconductor-superconductor system could be useful for developing quantum computers. Read More

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Jordan Peterson Sparks Discussion on Bitcoin vs. Traditional Banks – CryptoGlobe

Renowned psychologist Jordan Peterson recently ignited a conversation about the potential for Bitcoin to replace traditional banking systems. The discussion emerged on September 14, following news from Australia that Macquarie Bank plans to discontinue cash, check, and phone payment services.

Dr. Jordan Peterson is a Canadian clinical psychologist, professor, and cultural critic who has garnered international recognition for his thought-provoking ideas and critiques of various societal norms. Born on June 12, 1962, in Alberta, Canada, Peterson earned his Ph.D. in Clinical Psychology from McGill University. He later taught at Harvard University before returning to Canada to teach at the University of Toronto.

Peterson gained widespread fame for his vocal opposition to compelled speech and political correctness, particularly in the context of Canadian Bill C-16, which proposed adding gender identity or expression as a prohibited ground of discrimination under the Canadian Human Rights Act. His stances have made him a polarizing figure, drawing both fervent support and criticism.

He is also a best-selling author, with books like Maps of Meaning: The Architecture of Belief and 12 Rules for Life: An Antidote to Chaos, which have sold millions of copies worldwide. These works delve into complex topics such as belief systems, individual psychology, and the principles that govern human behavior.

With a social media following of over 4.6 million people, Petersons influence extends beyond academia into mainstream discussions on a wide array of topics. Whether its psychology, politics, or the intricacies of human behavior, his voice carries significant weight.

Recently, Peterson initiated a conversation about the potential of Bitcoin to serve as an alternative to traditional banking systems. This discussion was prompted by a report about Macquarie Bank published on September 13.

On September 13, according to an article by Daily Mail Australia, Macquarie Bank, Australias fifth-largest bank, has announced plans to eliminate all cash, check, and phone payment services in its Melbourne, Sydney, and Brisbane branches. The bank aims to complete this transition to digital-only transactions by November 2024. The decision has apparently sparked significant debate among customers and financial experts. The report mentioned that Sarah Wells, an expert in delivering strategic financing outcomes for high-net-worth individuals and families, has voiced concerns that this could set a trend for other banks, potentially making Australia a cashless society within a few years.

The article also noted that earlier this year, two other top 5 Australian banks ANZ and Commonwealth Bank had already stopped handling cash in some branches. However, Macquarie is the first to extend this policy across all its locations. The bank, which has a market capitalization of nearly $69 billion, will still allow its 1.7 million clients to withdraw cash from ATMs. But by May 2024, the bank will cease all over-the-counter cash and check deposits and withdrawals.

The article went on to say that social media posts the publics reaction to Macquaries announcement has been overwhelmingly negative. Wells suggests that this move could disproportionately impact various groups, including lower-income households, the elderly, and people with disabilities. She also warns that the rapid shift to a cashless society could have unintended consequences, such as depriving young people of understanding the true value of money.

This is not the first time that Peterson has talked about Bitcoin. For example, in an episode of The Dr. Jordan B. Peterson Podcast released on 9 August 2021, he sat down with four vocal members of the Bitcoin community for an introduction to the world of cryptocurrencies. One of those people was Robert Breedlove, ex-hedge fund manager, philosopher in the Bitcoin space, and host of The What is Money? Show.

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Jordan Peterson suggests it’s time to ‘scrap banks’ and use Bitcoin – Finbold – Finance in Bold

Dr. Jordan Peterson a best-selling author and well-known Canadian psychologist, with over 4.6 million followers on X sparked a debate on September 14, about the unbanking movement and Bitcoin (BTC) being a tool to scrap banks.

Notably, Petersons post was made in response to Australian news regarding Macquarie Banks branches moving to scrap cash, cheque, and phone payment services.

Australia is not the only country looking to end (or scrap) the use of physical cash or other non-centralized means of exchange. In most European countries, the use of cash is already limited to smaller transactions, and Nigerian banks also have low cash withdrawal limits on their ATMs.

In this context, Jordan Peterson suggested that people should stop using banks and asked if Bitcoin can fix this, as it can be the alternative tool for the ones that are still looking for a cash-like experience with their money.

Interestingly, the Canadian doctor had already demonstrated a will to use Bitcoin as a facilitator for global monetary transactions and was later introduced to Lightning Network custodial wallets by Joe Nakamoto (@JoeNakamoto), in order to receive borderless donations instead of using the fiat-based GoFundMe services.

Answering Petersons question, many renowned Bitcoin advocates commented in support of the cause. Like the host of the What is Money? podcast, Robert Breedlove:

Banks impart counterparty risk to the act of using money. Bitcoin in self-custody is money absent counterparty risk. So yes, Bitcoin fixes this.

Moreover, crypto enthusiasts from other cryptocurrency networks that are also focused on offering a cash-like experience to their users through decentralized and non-custodial means also showed up to the proposed debate, like Bitcoin Cash (BCH), Nano (XNO), Monero (XMR), XRP Ledger (XRP), Dash (DASH), ZCash (ZCH), Litecoin (LTC) and Dogecoin (DOGE).

However, the debate also brought critics like Aaron Day, a presidential candidate for the 2024 elections in the United States:

No, it couldnt. The traditional banking system can do 50k-100k transactions per second. The CBDC pilot in the US can do 1.7 million TPS. BTC can do 7 TPS. You need to do some research before you spout BTC.

Day is a well-known critic of Central Bank Digital Currencies (CBDCs) and a supporter of using cryptocurrencies for cash-like experiences.

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Binance CEO responds to rumors, says US executive is ‘taking a deserved break’ – Cointelegraph

Binance CEO Changpeng CZ Zhao has shot down speculation surrounding the departure of Binance.US CEO Brian Shroder, noting that he is taking a deserved break after a successful stint at the company.

Binance.US is a subsidiary of Binance Holdings, with the United States-based exchange seeing a handful of other top executives recently step down from the firm amid lawsuits from the U.S. Securities and Exchange Commission (SEC) and Commodities Futures Trading Commission (CFTC).

In a Sept. 15 statement via X (formerly Twitter), CZ urged people to ignore FUD around the recent shuffling of execs, as he suggested that Shroder was leaving the firm amicably after accomplishing everything he set out to do when he joined two years ago.

Under his leadership, Binance.US raised capital, improved its product and service offerings, solidified internal processes, and gained significant market share, all of which helped to build a more resilient company for the benefit of customers. We are grateful for his contributions, CZ said.

Binance is facing lawsuits from both the SEC and CFTC over several alleged violations of SEC and CFTC laws, including the alleged sale of unregistered securities and mishandling of customer funds. As part of its lawsuit, the SEC claimed that the U.S. and international branches of Binance have illegally commingled funds between each other.

Amid the lawsuit, Binance.US announced on Sept.13 that it was laying off a third of its staff and that Shroder was leaving his position as CEO. On Sept. 14, an additional two executive departures were reported as both head of legal Krishna Juvvadi and chief risk officer Sidney Majalya decided to quit the company. The departures fueled speculation on X that Binance may be facing worse legal troubles than previously understood.

Related: Binance.US not cooperating with investigation, US SEC says in filing

Seemingly referencing the lawsuits in his X post, CZ also asserted that the crypto market is in a different place now than it was two years ago as crypto firms face an increasingly hostile regulatory environment. In his view, the new CEO for Binance.US, Norman Reed, is the right person to lead the U.S. exchange in this new era.

Binance is the largest crypto exchange by volume in the world. It has come under increasing scrutiny since the third-largest exchange, FTX,went bankrupt in November 2022, and FTX executives were charged with fraud. Critics say Binance has not been transparent enough about its business practices and has not proven that it is solvent. However, CZ has brushed off these concerns, stating that the firm has no liquidity issues and that claims against it are unfounded.

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Binance CEO responds to rumors, says US executive is 'taking a deserved break' - Cointelegraph

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