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One of the secrets to building the worlds most powerful computer is probably perched by your bathroom sink.

At IBMs Thomas J. Watson Research Center in New York States Westchester County, scientists always keep a box of dental flossReach is the preferred brandclose by in case they need to tinker with their oil-drum-size quantum computers, the latest of which can complete certain tasks millions of times as fast as your laptop.

Inside the shimmering aluminum canister of IBMs System One, which sits shielded by the same kind of protective glass as the Mona Lisa, are three cylinders of diminishing circumference, rather like a set of Russian dolls. Together, these encase a chandelier of looping silver wires that cascade through chunky gold plates to a quantum chip in the base. To work properly, this chip requires super-cooling to 0.015 kelvinsa smidgen above absolute zero and colder than outer space. Most materials contract or grow brittle and snap under such intense chill. But ordinary dental floss, it turns out, maintains its integrity remarkably well if you need to secure wayward wires.

But only the unwaxed, unflavored kind, says Jay Gambetta, IBMs vice president of quantum. Otherwise, released vapors mess everything up.

Photograph by Thomas Prior for TIME

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Its a curiously homespun facet of a technology that is set to transform pretty much everything. Quantums unique ability to crunch stacks of data is already optimizing the routes of thousands of fuel tankers traversing the globe, helping decide which ICU patients require the most urgent care, and mimicking chemical processes at the atomic level to better design new materials. It also promises to supercharge artificial intelligence, with the power to better train algorithms that can finally turn driverless cars and drone taxis into a reality. Quantum AI simulations exhibit a degree of effectiveness and efficiency that is mind-boggling, U.S. National Cyber Director Chris Inglis tells TIME.

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Quantums earliest adopters are asset-management firmsfor which incorporating quantum calculations involves few increased overhead costsbut commercial uses arent far behind. Spanish firm Multiverse Computing has run successful pilot projects with multinational clients like BASF and Bosch that show its quantum algorithms can double foreign-exchange trading profits and catch almost four times as many production-line defects. Quantum deep-learning algorithms are completely different from classical ones, says Multiverse CEO Enrique Lizaso Olmos. You can train them faster, try more strategies, and they are much better at getting the correlations that matter from a lot of data.

Quantum chandeliers may look spectacular but they arent practical for next generation computers. IBM has instead designed flexible cabling to replace the looped wires.

Thomas Prior for TIME

Data received from quantum computers must be fed to rack of classical control electronic systems to process the calculations.

Thomas Prior for TIME

Tech giants from Google to Amazon and Alibabanot to mention nation-states vying for technological supremacyare racing to dominate this space. The global quantum-computing industry is projected to grow from $412 million in 2020 to $8.6 billion in 2027, according to an International Data Corp. analysis.

Whereas traditional computers rely on binary bitsswitches either on or off, denoted as 1s and 0sto process information, the qubits that underpin quantum computing are tiny subatomic particles that can exist in some percentage of both states simultaneously, rather like a coin spinning in midair. This leap from dual to multivariate processing exponentially boosts computing power. Complex problems that currently take the most powerful supercomputer several years could potentially be solved in seconds. Future quantum computers could open hitherto unfathomable frontiers in mathematics and science, helping to solve existential challenges like climate change and food security. A flurry of recent breakthroughs and government investment means we now sit on the cusp of a quantum revolution. I believe we will do more in the next five years in quantum innovation than we did in the last 30, says Gambetta.

But any disrupter comes with risks, and quantum has become a national-security migraine. Its problem-solving capacity will soon render all existing cryptography obsolete, jeopardizing communications, financial transactions, and even military defenses. People describe quantum as a new space race, says Dan OShea, operations manager for Inside Quantum Technology, an industry publication. In October, U.S. President Joe Biden toured IBMs quantum data center in Poughkeepsie, N.Y., calling quantum vital to our economy and equally important to our national security. In this new era of great-power competition, China and the U.S. are particularly hell-bent on conquering the technology lest they lose vital ground. This technology is going to be the next industrial revolution, says Tony Uttley, president and COO for Quantinuum, a Colorado-based firm that offers commercial quantum applications. Its like the beginning of the internet, or the beginning of classical computing.

Quantum chips are extremely sensitive. This decade-old IBM quantum processor was used in an experiment that proved how background microwaves affect qubits.

Thomas Prior for TIME

If anything, its surprising that traditional computing has taken us so far. From the trail-blazing Apple II of the late 1970s to todays smartphones and supercomputers, all processors break down tasks into binary. But life is so complex that rendering information in such a rudimentary manner is like playing a Rachmaninoff concerto in Morse code.

Quantum is also more in tune with nature. Moleculesthe building blocks of the universeare multiple atoms bound together by electrons that exist as part of each. The way these electrons essentially occupy two states at once is what quantum particles replicate, presenting applications for natural and material sciences by predicting how drugs interact with the human body, or substances perform under corrosion. Traditional manufacturing takes calculated guesses to make breakthroughs through trial and error; by mirroring the natural world, quantum should allow advances to be purposefully designed.

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While the worlds biggest companies, alongside hundreds of startups, are clamoring to harness quantum, IBM has emerged in recent years as the industry leader. Today, the firm has over 60 functioning quantum computersmore than the rest of the world combinedand a roster of collaborators that include titans of practically every industry from Exxon-Mobil to Sony. Its a welcome return to technologys zenith for the storied firm, founded over a century ago to produce tabulating machines fed with punch cards. In recent years, IBM had fallen behind rivals like Apple and Microsoft by not seizing the initiative with cloud computing and AI. Quantum offers some redemption. Its great to be back at the top again, says one executive. Its no secret that we let things slip by not jumping on cloud.

In November, IBM unveiled its new 433-qubit Osprey chipthe worlds most powerful quantum processor, the speed of which, if represented in traditional bits, would far exceed the total number of atoms in the known universe. IBM has more than 20 quantum computers available on its open-source quantum tool kit Qiskit, which has been downloaded more than 450,000 times to date. In order to build an industry around quantum, some machines are free to use, while paying clients such as startups and scholars can access more powerful ones remotely on a lease basis. IBM has a bold road map to launch a 1,121-qubit processor this year and, by 2025, surpass 4,000 qubits by creating modular quantum circuits that link multiple processor chips in the same computer. Modularity is a big inflection point, says Dario Gil, IBM senior vice president and director of research. We now have a way to engineer machines that will have tens of thousands of qubits.

Inside the IBM research lab in Yorktown Heights, New York

Thomas Prior for TIME

IBM research lab in Yorktown Heights, New York.

Thomas Prior for TIME

Quantums industrial uses are boundless. Inside BMWs headquarters in Munich there stands a wall that gives vehicle designers sleepless nights. Creating a new car model from scratch takes at least four years. First, designers use computer-aided styling to sketch an exterior that combines beauty with practicality. Next, a scale model is carved in clay and placed in a wind tunnel to assess aerodynamics. After countless decisions on interior, engine performance, and so on comes the ultimate test: a prototype is driven at 35 m.p.h. into that fabled wall to test how it performs in a crash. Should the car fail to meet various safety criteria, its back to the drawing board.

This is where quantum can help by accurately predicting how complex materials of different shapes will perform under stress. Robust simulated crash tests can save up to six months in the whole process, says Carsten Sapia, vice president of strategy, governance, and IT security at BMW Group, which has partnered with French quantum firm Pasqal. Quantum computing will also help us find the new optimum between design, maximum interior space, and best aerodynamics.

Thats just the start. Modern business teems with optimization problems that are ideally suited to quantum algorithms and could save time, energy, and resources. Were not just building the technology, we have to enable the workforce to use it, explains Katie Pizzolato, IBMs director of quantum strategy and applications research.

Sapia says finding uses for the technology is easy; the challenge will be ensuring that all divisions of BMW are able to utilize it. Already, BMW is unable to communicate from Europe to its cars in China for driving software maintenance and monitoring because of increasingly strict curbs on the transfer of data across borders. In the future, we will rely on everywhere in the world having access to quantum technology to run our business, Sapia says. So how can we set it up so no matter what happens on a geopolitical scale that we still have access to this technology?

The full chandelier inside a quantum computer.

Thomas Prior for TIME

Over the past few years quantum has moved from a footnote to the top of the global security agenda. To date, 17 countries have national quantum strategies and four more are developing them. China has invested an estimated $25 billion in quantum research since the mid-1980s, according to Quantum Computing Report. Its top quantum scientist, Pan Jianwei, led the launch of the worlds first quantum satellite in 2016 and in 2021 unveiled a then record-breaking 56-qubit quantum computer. Chinas 14th Five-Year Plan, published in March 2021, made mastery of quantum a policy priority. The blurred line between industry and national security in China gives them an advantage, says David Spirk, former chief data officer at the Department of Defense.

In response, the White House in May published a National Security Memorandum that ordered all federal agencies to transition to post-quantum security owing to significant risks to economic and national security. Given that upgrading critical infrastructure can take decades, and literally everything connected to the internet is at risk, the impetus is to act now. We realized that while [quantum is] wonderful for humanity, the first thing people are going to do is weaponize these systems, says Skip Sanzeri, founder and COO of QuSecure, a post-quantum cybersecurity firm enlisted by the U.S. military and federal government to handle what he says could be a $1 trillion cybersecurity upgrade.

Still, Spirk worries that the U.S. risks falling behind and is calling for a Manhattan Projectlike focus on quantum. Of the over $30 billion spent globally on quantum last year, according to the World Economic Forum, China accounted for roughly half and the E.U. almost a quarter. The U.S. National Quantum Initiative, meanwhile, spent just $1.2 billiona figure Spirk calls trivial against $1 trillion in total defense spending. This is not a coming wave, he says, its here.

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The stakes couldnt be higher. Today, practically all cybersecuritywhether WhatsApp messages, bank transfers, or digital handshakesis based on RSA, an asymmetric cryptography algorithm used to safely transfer data. But while a regular computer needs billions of years to crack RSA, a fast quantum computer would take just hours. In December, a team of scientists in China published a paper that claimed it had a quantum algorithm that could break RSA with a 372-qubit computer (though its conclusions are hotly debated). The race is now on to devise postquantum securitya job that falls to the U.S. National Institute of Standards and Technology, or NIST. In 2016, NIST announced a competition for programmers to propose new post-quantum encryption algorithms. The results were mixed: one of the finalists announced on July 5, 2022, has since been cracked by a regular laptop in a little over an hour.

In some ways, its already too late. Even though quantum computers powerful enough to crack RSA are a few years away from being openly available, hackers are already seizing and storing sensitive data in the knowledge that they will be able to access it via quantum very soon. Every day that you dont convert to a quantum-safe protocol, theres no recovery plan, Gil says.

The glass shell around the quantum computer allows IBM to tightly control the temperature inside. This is critical for the quantum chip, which has to be kept at a fraction above absolute zero.

Thomas Prior for TIME

The war in Ukraine has also served as a wake-up call. It is historys first hot conflict to begin with cyber-attacks, as Russia targeted vital -communications and infrastructure to lay the groundwork for its military assault. Public services, energy grids, media, banks, businesses, and nonprofit organizations were subjected to a cyberblitzkrieg, impacting the distribution of medicines, food, and relief supplies. Modern warfare and nationalsecurity mechanisms are grounded in the speed and precision of decisionmaking. If your computer is faster than theirs, you win, its pretty simple, says Spirk. Quantum is that next leap.

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But malign intentions are just one hazard. With the U.S. embroiled in a new Cold War, its also unclear if China and Russia would adopt new NIST protocols, not least since in the past, RSA cryptography has allegedly been breached by the U.S. National Security Agency. In September, National Security Adviser Jake Sullivan said quantum would have an outsized importance over the coming decade, adding that export controls could be used to maintain U.S. advantage. Competing post-quantum security standards across Washingtons and Beijings spheres of influence have the potential to cleave the world into divergent blocs, with grave implications for global trade. [The] balkanization of what we know today as a free and open internet is distinctly possible, Inglis says.

The trepidation surrounding quantum doesnt stem solely from security risks. We trust classical computers in part because we can verify their computations with pen and paper. But quantum computers involve such arcane physics, and deal with such complex problems, that traditional verification is extremely tricky. For now, its possible to simulate many quantum calculations on a traditional super-computer to check the outcome. But soon will come a time when trusting a quantum computer will require a leap of faith. Trust building across the entire ecosystem right now is really important, says Uttley.

Boeing, for one, has been working with IBMs quantum team since 2020 on designing new materials for its next generation of aircraft. But given the colossal reputational stakes, the firm is in no rush. The modeling tools that we use to design our airplanes are closely monitored, says Jay Lowell, chief engineer for disruptive computing and networks at Boeing. To turn [quantum] into an operational code is a huge, huge hurdle.

One that IBM knows only too well. But by making its quantum computers open source, and welcoming academics and entrepreneurs from all over, the firm hopes to mitigate the hesitancy. As Gil puts it, this is a new frontier of humanity.

With reporting by Leslie Dickstein

Correction, Jan. 28

The original version of this story misstated the name of a French quantum firm. It is Pasqal, not Pascal.

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Write to Charlie Campbell at charlie.campbell@time.com.

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By default, every quantum computer is going to be a hybrid that combines quantum and classical compute. Microsoft estimates that a quantum computer that will be able to help solve some of the worlds most pressing questions will require at least a million stable qubits. Itll take massive classical compute power which is really only available in the cloud to control a machine like this and handle the error correction algorithms needed to keep it stable. Indeed, Microsoft estimates that to achieve the necessary fault tolerance, a quantum computer will need to be integrated with a peta-scale compute platform that can manage between 10 to 100 terabits per second of data moving between the quantum and classical machine. At the American Physical Society March Meeting in Las Vegas, Microsoft today is showing off some of the work it has been doing on enabling this and launching what it calls the Integrated Hybrid feature in Azure Quantum.

With this Integrated Hybrid feature, you can start to use within your quantum applications classical code right alongside quantum code, Krysta Svore, Microsofts VP of Advanced Quantum Development, told me. Its mixing that classical and quantum code together that unlocks new types, new styles of quantum algorithms, prototypes, sub routines, if you will, where you can control what you do to qubits based on classical information. This is a first in the industry.

Image Credits: Microsoft

This, she argued, is a step in bringing classical and quantum computing together, but also in enabling new error correction protocols. Without this massive amount of classical compute, it wont be possible at least in the foreseeable future to effectively control a quantum machine.

Arguably, the only place you will be able to have scaled-up quantum machines, scaled-up quantum computing will be in a public cloud because its that critical to have that level of scale of classical computing integrated with the quantum machine, Svore explained. She describes the process as a dance, where the classical compute helps choreograph a million qubits to work together simultaneously, all doing their little square dance or hexagon dance, whatever it may be. But to do that, you have to talk to all of these qubits simultaneously, which necessitates these massive compute and bandwidth requirements.

Svore also argues that it takes a lot of classical compute to build the algorithms that are then sent over to the quantum machine which may then also take weeks to run a given computation (and that feedback loop may happen numerous times, too).

With this new Integrated Hybrid feature then, Microsoft is giving developers and researchers the tools to look at what this combination between quantum and classical looks like in practice. Specifically, Svore told me, itll enable them to run a version of the phase estimation algorithm, for example, which is a key algorithm in the quantum computing toolkit. Researchers will soon be able to use Quantinuum hardware available in Azure to test this and then have the classical computer react to data coming back from the quantum machine, for example. Until now, a lot of this was theoretical, but now itll be possible to do it in hardware.

Over time, the role of classical computing in enabling quantum computing has become more widely understood in the industry. Microsoft, of course, argues that its massive cloud will enable it to deliver the kind of classical compute power needed to control these machines. Its obviously not the only player in the market, with Amazon, Google, IBM and others also being able to integrate quantum processors into their massive data centers as well.

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