Do It 100 Trillion Times Faster! Race Quantum Supremacy

The Defense Advanced Research Projects Agency (DARPA) initiative is looking in a full picture of how quantum computing will shape the next 30 years of computing.  In April 2021, the agency embarked on a new initiative to support the development of quantum computers. Called the Quantum Benchmarking program, the effort aims to establish key quantum-computing metrics and then make those metrics testable.

“It’s really about developing quantum computing yardsticks that can accurately measure what’s important to focus on in the race toward large, fault-tolerant quantum computers,” Joe Altepeter, program manager in DARPA’s Defense Sciences Office, said in an agency announcement. Historically, the U.S. has invested heavily in quantum science research, but it has not had a full national strategy to coordinate those efforts. The December 2018 National Quantum Initiative Act kickstarted the federal approach to accelerate quantum research and development for an initial five-year period.

Developing metrics would also help quantify and understand how transformative large quantum computers could be. ..The 2018 legislation also established various research centers and partnerships for quantum computing, such as the Quantum Economic Development Consortium comprising government, private and public entities. Under these partnerships, researchers have explored how quantum computing interacts with other technologies, like artificial intelligence, to impact health care. “One of the applications we’re excited about is enabling drug discovery. We want to investigate if we can help the pharmaceuticals industry,” said Altepeter…

“[Quantum computers] could be transformative and the most important technology we’ve ever seen, or they can be totally useless and these gigantic paperweights that are sitting in labs across the country. That window of potential surprise is the key. That’s the kind of surprise that DARPA cannot allow to exist,” said Altepeter. “It’s our job to make sure that we eliminate those kinds of surprises — hence why we wanted to do this program.”

Excerpts from Sarah Sybert, DARPA Aims for Quantum-Computing Benchmarks in New Program,, June 21, 2021

A team of Chinese scientists has developed the most powerful quantum computer in the world, capable of performing at least one task 100 trillion times faster than the world’s fastest supercomputers…In 2019, Google said it had built the first machine to achieve “quantum supremacy,” the first to outperform the world’s best supercomputers at quantum calculation. In December 2020, a Chinese team, based at the University of Science and Technology of China in Hefei, reported their quantum computer, named Jiuzhang, is 10 billion times faster than Google’s. Assuming both claims hold up, Jiuzhang would be the second quantum computer to achieve quantum supremacy anywhere in the world.

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