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A new high-brightness and scalable quantum light source is developed, exploring the idea of stimulated emission of squeezed photons, which has simultaneously near-unity purity and efficiency. This GBS is programmable by tuning the phase of the input squeezed states. The obtained samples are efficiently validated by inferring from computationally friendly subsystems, which rules out hypotheses including distinguishable photons and thermal states. We show that our GBS experiment passes a nonclassicality test based on inequality constraints, and we reveal nontrivial genuine high-order correlations in the GBS samples, which are evidence of robustness against possible classical simulation schemes. This photonic quantum computer, Jiuzhang 2.0, yields a Hilbert space dimension up to ∼10^{43}, and a sampling rate ∼10^{24} faster than using brute-force simulation on classical supercomputers.","publishedDate","2021-10-25","publishedYear",2021,"venue","Physical Review Letters",424,"authors","keywords",[154,155,156],"pdfUrl","https://ris.utwente.nl/ws/files/275247561/PhysRevLett.127.180502.pdf","topVenue","Quantum Information and Cryptography","Neural Networks and Reservoir Computing","Quantum Computing Algorithms and Architecture","paper_W2981795808","Boson Sampling with 20 Input Photons and a 60-Mode Interferometer in a1014-Dimensional Hilbert Space","{\"arxiv\":\"1910.09930\",\"openalex\":\"W2981795808\",\"doi\":\"10.1103/physrevlett.123.250503\"}","2026-05-16T04:03:15.45204638","2026-05-19T01:49:03.380451017","10.1103/physrevlett.123.250503","1910.09930","W2981795808","Quantum computing experiments are moving into a new realm of increasing size and complexity, with the short-term goal of demonstrating an advantage over classical computers. Boson sampling is a promising platform for such a goal; however, the number of detected single photons is up to five so far, limiting these small-scale implementations to a proof-of-principle stage. Here, we develop solid-state sources of highly efficient, pure, and indistinguishable single photons and 3D integration of ultralow-loss optical circuits. We perform experiments with 20 pure single photons fed into a 60-mode interferometer. In the output, we detect up to 14 photons and sample over Hilbert spaces with a size up to 3.7×10^{14}, over 10 orders of magnitude larger than all previous experiments, which for the first time enters into a genuine sampling regime where it becomes impossible to exhaust all possible output combinations. 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Jelmer J. Renema 人物

Jelmer J. Renema · 相关事件