Quantum physicist Chao-Yang Lu develops superfast computers that rely on the curious collisions of single particles of light.
Chao-Yang Lu is a quantum physicist at the University of Science and Technology of China in Hefei, China. Credit: Dave Tacon forIn my laboratory, we develop quantum computers based on single photons, the fundamental particles of light. In 2020, our computer was the first worldwide to demonstrate ‘quantum advantage’: it completed a calculation in 200 seconds that would take a conventional supercomputer more than 2 billion years.
Here, I am looking through the control electronics part of our quantum computer. The control electronics ‘phase lock’ our photons so that they arrive in the computer together, with 15-nanometre precision. The machine performs calculations on the basis of the photons’ interactions.
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