What is USTC Jiuzhang 3.0 Photonic Quantum Computer?

Quantum computing is an approach to computing that represents and processes information using quantum states rather than ordinary bits, and it has the potential to complete some calculations much faster than classical computers. Boson sampling is a restricted model of quantum computation: it samples from the probability distribution of identical bosons, such as particles of light, scattered by a network of optical paths. Jiuzhang 3.0 is a quantum computer described by its makers as running Gaussian boson sampling experiments (a form of boson sampling that uses squeezed light) with detectors that can tell roughly how many photons arrive. It was reported in Physical Review Letters, published on 10 October 2023, by a team of authors most of whom are affiliated with the University of Science and Technology of China, together with co-authors at other institutions.

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