AI Article Synopsis
- Real-time analysis of single-photon coincidence is vital for enhancing photonic quantum computing, but existing methods struggle with high channel numbers and counting rates.
- A new real-time time-tagged coincidence method was proposed and tested using a 32-channel counting unit on a field-programmable gate array (FPGA) system, achieving high counting rates and a timing resolution of 390 ps.
- This unit can potentially be scaled up to 10,000 channels and is particularly effective for complex applications like boson sampling, positioning it as a key solution for single-photon coincidence counting in quantum computing.
Article Abstract
Real-time analysis of single-photon coincidence is critical in photonic quantum computing. The large channel number and high counting rate foreseen in such experiments pose a big challenge for the conventional time tagged method and coincidence instruments. Here we propose a real-time time-tagged coincidence method and a data filtering solution, demonstrated by a 32-channel coincidence counting unit that has been implemented successfully on a field-programmable gate array system. The unit provides high counting rates, a tunable coincidence window, and a timing resolution of 390 ps. Beyond that, it is feasible to be scaled up to 104 channels and is thus ideally suited for channel consuming applications such as boson sampling. Based on the versatility and scalability the unit has shown, we believe that it is the turn-key solution for many single-photon coincidence counting applications in photonic quantum computing.
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| http://dx.doi.org/10.1063/1.5044250 | DOI Listing |
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