A series of recent experiments between quantum and classical computers shows the term’s ever-evolving meaning.
in which they generated seemingly random numbers. During the pandemic, they built a tabletop machine named Borealis, consisting of lasers, mirrors, and over a kilometer of optical fiber. Within Borealis, 216 beams of infrared light bounced around through a complicated network of prisms. Then, a series of detectors counted the number of photons in each beam after they traversed the prisms.
The experiment is the latest in a series of demonstrations of so-called quantum advantage, where a quantum computer defeats a state-of-the-art supercomputer at a specified task. The experiment “pushes the boundaries of machines we can build,” says physicist Nicolas Quesada, a member of the Xanadu team who now works at Polytechnique Montréal.
in 2011 as “quantum supremacy,” which he has described as “the point where quantum computers can do things that classical computers can’t, regardless of whether those tasks are useful.”
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