2021/05/31 by Yutaro Enomoto, Kazuma Yonezu, Yosuke Mitsuhashi +2
Computer Science · Engineering · Physics and Astronomy · #Computer science #Neural Networks and Reservoir Computing #Optical Network Technologies #Optoelectronics #Parallel computing #Photonics #Physics #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum gate #Quantum mechanics #Scalability #quant-ph
paper · pdf · doi:10.1126/sciadv.abj6624
published as Science Advances 7, eabj6624 (2021) · 17 pages, 6 figures. 5 pages, 3 figures in the supplementary materials
openalex publication_date 2021/11/12 · arxiv created 2021/11/14 · arxiv updated 2021/11/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A quantum processor to import, process, and export optical quantum states is a common core technology enabling various photonic quantum information processing. However, there has been no photonic processor that is simultaneously universal, scalable, and programmable. Here, we report on an original loop-based single-mode versatile photonic quantum processor that is designed to be universal, scalable, and programmable. Our processor can perform arbitrarily many steps of programmable quantum operations on a given single-mode optical quantum state by time-domain processing in a dynamically controlled loop-based optical circuit. We use this processor to demonstrate programmable single-mode Gaussian gates and multistep squeezing gates. In addition, we prove that the processor can perform universal quantum operations by injecting appropriate ancillary states and also be straightforwardly extended to a multimode processor. These results show that our processor is programmable, scalable, and potentially universal, leading to be suitable for general-purpose applications.