Magnetic-based spintronic computers could match the raw computing power of quantum computers, without the need for electricity.
Researchers at Massachusetts Institute of Technology (MIT) have developed an innovative new circuit that allows for precise computing without the need for electricity. The novel design instead relies on magnetic waves an advance that makes a significant step towards magnetic devices. Dubbed spintronics these devices have the potential to be more powerful and efficient than electronics.
Classical computers which depend on the consumption of massive amounts of electricity generate a huge amount of wasted heat. In contrast to this, spintronic devices use very little electricity in comparison and thus, generate far less heat practically none, in fact.
Spintronic devices use a particular property of electrons on a quantum-level called the spin-wave in magnetic materials in a lattice-like arrangement. The process involves utilising modulation of this spin-wave to produce a measurable output correlated to computing.
People are beginning to look for computing beyond silicon. Wave computing is a promising alternative, says Luqiao Liu, a professor in the Department of Electrical Engineering and Computer Science (EECS) and principal investigator of the Spintronic Material and Device Group in the Research Laboratory of Electronics.
The significant breakthrough made by the MIT team is the development of a circuit architecture that does away with the need for bulky components used to inject electrical currents. This is an advantage as such components can cause signal noise, thus reducing performance.
The team negated the need for such components by developing a nanometer-wide magnetic domain wall in layered nanofilms of magnetic material to modulate a passing spin-wave, with no need for any extra components or electrical current. In turn, the spin-wave can be tuned to control the location and width of this domain as needed, giving precise control of two changing spin-wave states. These spin states corresponding to the 1s and 0s used in classical computing.
Future applications of these spin-waves could see pairs fed into a circuit through dual-channels. Each member of this pair could be modulated for different properties combining to generate measurable quantum interference. This is analogous to the use of photon-wave interference in quantum computing.
By using this narrow domain wall, we can modulate the spin-wave and create these two separate states, without any real energy costs. We just rely on spin waves and intrinsic magnetic material, Liu continues.
As such, the researchers suggest that such spintronics based devices relying on interference could, in theory, match quantum computers in terms of raw computing power, executing complex tasks that conventional computers struggle with.
Spin waves are ripples of energy with small wavelengths, the collective spins of many electrons are called magnons. Although these magnons are not true particles they can be measured in a similar way to electrons to be used in computing applications.
The team layered a pattern of cobalt/nickel nanofilms each a few atoms thick with certain desirable magnetic properties that can handle a high volume of spin waves. Then placing this wall in the middle of a magnetic material with a special lattice structure. This system was then integrated into a circuit.
On one side of the circuit, the researchers excited constant spin waves in the material. As this wave passes through the wall, its magnons immediately spin in the opposite direction, flipping from north in the first region to south in the second region beyond the wall. This flip causes a dramatic shift in the waves phase or its angle of orientation and a slight decrease in its magnitude or its power.
In their experiments, the researchers placed a separate antenna on the opposite side of the circuit, detecting and transmitting an output signal. R
Their results indicated that, at its output state, the phase of the input wave flipped 180 degrees. The waves magnitude measured from highest to lowest peak had also decreased by a significant amount.
The team also discovered a mutual interaction between spin-waves and the magnetic domain wall. This interaction enabled them to efficiently switch between two states. Without the domain wall, the circuit would be uniformly magnetized. But, with the domain wall in place, the circuit has a split, modulated wave.
By controlling the spin-wave, the MIT researchers found that they were able to control the position of the domain wall. This process relies on a phenomenon involving spinning electrons essentially jolting a magnetic material in order to flip its magnetic orientation otherwise known as spin-transfer torque.
The team boosted the power of injected spin waves to induce a specific spin in the magnons pulling the domain wall toward the boosted wave source. Doing this results in the wall getting stuck under the antenna effectively making it unable to modulate waves and ensuring uniform magnetization in this state.
Using a special magnetic microscope, the team were able to identify that this process causes a micrometre-sized shift in the wall. Just enough to position it anywhere along the material block.
Liu notes that the mechanism of magnon spin-transfer torque was proposed, but not demonstrated, a few years ago. There was good reason to think this would happen, the researcher adds. But our experiments prove what will actually occur under these conditions.
Liu describes the whole circuit is like a water pipe. The domain wall acting as a valve controls how the spin-wave flows through the material just like water flows through a pipe.
But you can also imagine making water pressure so high, it breaks the valve off and pushes it downstream, Liu elaborates. If we apply a strong enough spin-wave, we can move the position of domain wall except it moves slightly upstream, not downstream.
Such innovations could enable practical wave-based computing for specific tasks, such as the signal-processing technique, called fast Fourier transform.
As a further step in their work, the researchers hope to build a working wave circuit that can execute basic computations. In order to do this, they must optimize materials, reduce potential signal noise, and further study how fast they can switch between states by moving around the domain wall.
Thats next on our to-do list, concludes Liu.
- Quantum Computing strikes technology partnership with Splunk - Proactive Investors USA & Canada - March 26th, 2020
- Devs: Alex Garland on Tech Company Cults, Quantum Computing, and Determinism - Den of Geek UK - March 26th, 2020
- Is Machine Learning The Quantum Physics Of Computer Science ? - Forbes - March 26th, 2020
- Recent PDF Report : Quantum Computing Market 2020: In-depth Industry Analysis By Size, Share, Competition, Opportunities And Growth By 2029 - Sound On... - March 26th, 2020
- Organisms grow in wave pattern, similar to ocean circulation - Big Think - March 26th, 2020
- Tech incubator Fountech.Ventures launches in US and UK - UKTN - March 26th, 2020
- Why resilience is the key to future security - Raconteur - March 22nd, 2020
- Quantum computing is right around the corner, but cooling is a problem. What are the options? - Diginomica - March 21st, 2020
- Quantum Computing: Will It Actually Produce Jobs? - Dice Insights - March 21st, 2020
- Quantum computing, AI, China, and synthetics highlighted in 2020 Tech Trends report - VentureBeat - March 16th, 2020
- Early investment in quantum computing could result in a competitive advantage - Help Net Security - March 16th, 2020
- Quantum Computing for Everyone - The Startup - Medium - March 16th, 2020
- UC Riverside to lead scalable quantum computing project using 3D printed ion traps - 3D Printing Industry - March 16th, 2020
- Deltec Bank, Bahamas - Quantum Computing Will have Positive Impacts on Portfolio Optimization, Risk Analysis, Asset Pricing, and Trading Strategies -... - March 16th, 2020
- NIST Works on the Industries of the Future in Buildings from the Past - Nextgov - March 16th, 2020
- Archer Materials" patent application received by World Intellectual Property Organisation - Proactive Investors Australia - March 16th, 2020
- Why the Journey to Cloud Must Start With the Workforce - AiThority - March 9th, 2020
- 'Devs': How the FX on Hulu show's tech compares with reality - Los Angeles Times - March 5th, 2020
- Quantum Computing Market: Qualitative Analysis of the Leading Players and Competitive Industry Scenario, 2025 - Express Journal - March 5th, 2020
- Quantum Computing Market 2019 Analysis by Key Players, Share, Trend, Segmentation and Forecast to 2029 - News Times - March 5th, 2020
- Cracking the uncertainty around quantum computing - Information Age - March 4th, 2020
- Surprise contender Honeywell enters the quantum computing race - New Scientist News - March 4th, 2020
- Cambridge Quantum Computing teams up with CERN to advance quantum technologies - IT Brief Australia - March 4th, 2020
- Gilles Brassard honoured by the BBVA Foundation for his work in quantum computing - Quantaneo, the Quantum Computing Source - March 4th, 2020
- The view of quantum threats from the front lines - JAXenter - February 24th, 2020
- U.S. Progress on AI and Quantum Computing Will Best China, Says CTO Michael Kratsios - BroadbandBreakfast.com - February 24th, 2020
- Scientists Have Discovered a Brand New Electronic State of Matter - ScienceAlert - February 24th, 2020
- Where the Buzz About Quantum Computing Is Wrong - Toolbox - February 21st, 2020
- New report: Quantum Computing Market Size position and size report for 2019 to 2023 recently published - Instant Tech News - February 21st, 2020
- Global Deep Learning Chip Market (2019 to 2027) - Drivers, Restraints, Opportunities and Trends - ResearchAndMarkets.com - Business Wire - February 21st, 2020
- Quantum Computing Technologies Market: Industry Players Analysis, New Innovation, Growth Prospects, Size, Growth, Revenue, Development Policy,... - February 21st, 2020
- Why Quantum Computing Gets Special Attention In The Trump Administration's Budget Proposal - Texas Standard - February 20th, 2020
- Quantum Internet: The Technology That Could Change Everything? - The National Interest Online - February 20th, 2020
- HPC User Forum to Explore AI-HPDA Use In Banking and Investment Firms - insideHPC - February 20th, 2020
- 29 deeptech VCs in Europe you need to know - Sifted - February 20th, 2020
- Why Quantum Computing Gets Special Attention In The Trump Administration's Budget Proposal - KUT - February 19th, 2020
- The $600 quantum computer that could spell the end for conventional encryption - BetaNews - February 19th, 2020
- Quantum Internet Workshop Begins Mapping the Future of Quantum Communications - Quantaneo, the Quantum Computing Source - February 19th, 2020
- Correcting the jitters in quantum devices - MIT News - February 19th, 2020
- Govt creates tech group to chart the tech landscape for India - Economic Times - February 19th, 2020
- The EU is preparing to invest 2bn in a cloud computing alliance - NS Tech - February 19th, 2020
- Quantum Computing Market Analysis With Key Players, Applications, Trends and Forecast To 2026 - Instant Tech News - February 19th, 2020
- Russian Quantum Center and Nissan have launched a project in the field of quantum chemistry - Quantaneo, the Quantum Computing Source - February 17th, 2020
- QUANTUM COMPUTING TECHNOLOGIES Market: Comprehensive study explores Huge Growth in Future | D-Wave Systems Inc., IBM Corporation, Lockheed Martin... - February 17th, 2020
- Quantum Internet Workshop Begins Mapping the Future of Quantum Communications - HPCwire - February 17th, 2020
- Quantum Computing Market 2020 Trends, Market Share, Industry Size, Opportunities, Analysis and Forecast by 2026 - Instant Tech News - February 17th, 2020
- Quantum Computing Market Size Outlook 2026: Prime Firms, Trends, Growth Factors Details by Regions, Sorts and Applications - Instant Tech News - February 17th, 2020
- Nobody is behind in science and technology: Serguie Beloussov - Kuensel, Buhutan's National Newspaper - February 17th, 2020
- China beats US in key patents to secure technological dominance - The News International - February 17th, 2020
- Quantum Computing Market 2019 Analysis by Key Players, Share, Trend, Segmentation and Forecast to 2026 - Instant Tech News - February 15th, 2020
- Chinese researchers smash the record for realising two entangled quantum memories at maximum distance - www.computing.co.uk - February 15th, 2020
- Quantum Computing: How To Invest In It, And Which Companies Are Leading the Way? - Nasdaq - February 14th, 2020
- DOE Workshop Begins Mapping the Future of Quantum Communications - insideHPC - February 14th, 2020
- Scientists discover how to use time crystals to power superconductors - Big Think - February 14th, 2020
- Quantum Computing Market With Four Main Geographies And Their Countries - Instant Tech News - February 14th, 2020
- Russian Quantum Center and Nissan have launched a project in the field of quantum chemistry - Research Snipers - February 14th, 2020
- Global Quantum Computing Market Newest Research Report In PDF With Forecast [2020-2029] : International Business Machines (IBM) Corporation, Google... - February 14th, 2020
- Budget 2020: Govt bets on AI, data analytics and quantum computing - Livemint - February 2nd, 2020
- This Week's Awesome Tech Stories From Around the Web (Through February 1) - Singularity Hub - February 2nd, 2020
- AI has great potential in transforming the world: Alphabet CEO Sundar Pichai - YourStory - February 2nd, 2020
- Budget 2020: New scheme to boost local manufacturing of mobiles, will iPhone get cheaper now? - India Today - February 2nd, 2020
- What Is Quantum Computing and How Does it Work? - Built In - January 30th, 2020
- IBM Just Called Out Google Over Their "Quantum Computer" - The National Interest Online - January 30th, 2020
- Quantum Computing releases its new software application called Mukai - Proactive Investors USA & Canada - January 30th, 2020
- Burning Things With Big Lasers In The Name Of Security - Hackaday - January 30th, 2020
- What Is Quantum Computing, And How Can It Unlock Value For Businesses? - Computer Business Review - January 27th, 2020
- The End Of The Digital Revolution Is Coming: Here's What's Next - Innovation Excellence - January 27th, 2020
- Healthcare venture investment in 2020: Quantum computing gets a closer look - Healthcare IT News - January 27th, 2020
- Delta Partners with IBM to Explore Quantum Computing - Database Trends and Applications - January 27th, 2020
- New Centers Lead the Way towards a Quantum Future - Energy.gov - January 27th, 2020
- ASC20 Finals to be Held in Shenzhen, Tasks Include Quantum Computing Simulation and AI Language Exam - HPCwire - January 27th, 2020
- Toshiba says it created an algorithm that beats quantum computers using standard hardware - TechSpot - January 27th, 2020
- Quantum networking projected to be $5.5 billion market in 2025 - TechRepublic - January 27th, 2020
- University of Sheffield launches Quantum centre to develop the technologies of tomorrow - Quantaneo, the Quantum Computing Source - January 27th, 2020
- 5 Emerging Technologies That Will Shape this Decade - San Diego Entertainer Magazine - January 27th, 2020
- Is Quantum Technology The Future Of The World? - The Coin Republic - January 12th, 2020
- Were approaching the limits of computer power we need new programmers now - The Guardian - January 12th, 2020
- Global Quantum Computing Market: What it got next? Find out with the latest research available at PMI - Pro News Time - January 12th, 2020
- Quantum Computing Technologies Market to Witness Huge Growth by 2020-2025, Latest study reveals - ReportsPioneer - January 12th, 2020
- Podcast: The Overhype and Underestimation of Quantum Computing - insideHPC - January 10th, 2020