Timestamp boson sampling

Quantum advantage, benchmarking the computational power of quantum machines outperforming all classical computers in a specific task, represents crucial milestone developing and has been driving different physical implementations since concept was proposed. A boson sampling machine, an analog computer that only requires multiphoton interference single-photon detection, is considered to be promising candidate reach this goal. However, probabilistic nature photon sources inevitable loss evolution network make execution time exponentially increasing with problem size. Here, we propose experimentally demonstrate timestamp scheme can effectively reduce for any By time-of-flight storage technique precision up picosecond level, are able detect record complete information 30 individual modes out large-scale 3D photonic chip. We perform three-photon injection one external trigger experiment protocol works properly time. further verify sampler distinguished from other samplers case limited datasets through three heralded single photons experiment. The speed process, which widely applied experiments at low-sampling rate. approach associated newly exploited resource boost count-rate-limited experiments, suggesting emerging field optics.