Time-stamped Bose sampling quantum computing system based on time-of-flight detection technology

Abstract

A quantum computing system based on time-of-flight detection technology to realize time-stamp Bose sampling, including: a three-dimensional photonic chip as an m-mode interferometer connected in sequence, an avalanche photodiode array as a detection end, a time-of-flight module, and a data processing module. The present invention It can detect, collect and store the time information of m different channel signals in the process of Bose sampling quantum computing, and extract the time information of the required n photon signals and 1 trigger signal matching event after post-processing, and use the time matching event Information reconstruction of exit probability distributions for Bose-sampled quantum computing. This method replaces the method of collecting the number of occurrences of events in the previous experiment process, and greatly reduces the time and count rate required for the experiment by two orders of magnitude, improves the efficiency of Bose sampling quantum computing and reduces the consumption of experimental time resources , which further provides the possibility of Bose sampling quantum computing to increase the number of photons n and the number of modes m, and finally achieve quantum supremacy.

Description

technical field [0001] The present invention relates to a technology in the field of quantum computing, in particular to a time-of-flight detection technology to realize time-stamp Bose sampling quantum computing system. Background technique [0002] Bose sampling quantum computing was first proposed by S.Aaronson and A.Arkhipov, and it is considered to be one of the reliable candidates for quantum hegemony. Its principle is to drive n identical bosons into an interferometer with m modes (m>n), and its output probability distribution is reconstructed and analyzed. At present, many studies in the world have physically realized Bose sampling quantum computing, but in the traditional experiment process, due to the influence of system loss, with the increase of the number of photons n and the number of modes m, the total number of outgoing combinations Increased to the point where it is difficult to fully measure. Within a reasonable experimental time range, some combinati...

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Problems solved by technology

[0003] Aiming at the problem that it is difficult to perform Bose sampling quantum computing in the prior art under the condition of low throughput and low sampling rate, the present invention proposes a time-of-flight detection technology to realize time-stamp Bose sampling quantum computing system, which can detect, collect and In the process of Bose sampling quantum computing, the time information of different channels (m modes) is stored, and the time information of the required n+1 bodies (n photon signals and 1 trigger signal) is extracted after post-processing. Reconstruction of exit probability distributions for Bose-sampled quantum computing by coincident event time information

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