The Multi-Channel Coincidence Unit utilizes an FPGA high-speed interconnect architecture.Through deep integration of Time-to-Digital Con-version (TDC) and multi-channel coincidence logic,it achieves high-precision synchronous capture of quantum-correlated events. Its core principle lies in leveraging hardware-level time-stamping technology to resolve sub-nanosecond photon arrival timing. Combined with programmable coincidence windows, it intelligently filters genuine entanglement signals, effectively suppressing environmental noise and dark count interference. This system supports arbitrary coincidence across 16 channels.It is applicable to cutting-edge research scenarios such as multi-photon entanglement experiments,single-molecule fluorescence lifetime imaging,quantum communication network synchronization calibration, and nuclear physics coincidence measurements, providing a precise time scale for capturing correlated measurements in the microscopic world.
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