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Proceedings Paper

Large-scale artificial spin network based on time-multiplexed degenerate optical parametric oscillators for coherent Ising machine
Author(s): Hiroki Takesue; Takahiro Inagaki; Kensuke Inaba; Ryan Hamerly; Kyo Inoue; Yoshihisa Yamamoto
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Paper Abstract

We describe a large-scale degenerate optical parametric oscillator (DOPO) network for a coherent Ising machine that solves combinatorial optimization problems. By pumping a fiber-based phase-sensitive amplifier placed in a 1-km fiber cavity at a 2-GHz repetition frequency, we generated more than 10,000 DOPOs multiplexed in the time domain. We confirmed that the DOPO phases were discretized to {0, π} indicating that they could be used as stable artificial spins. We also implemented a one-dimensional Ising model by optically coupling adjacent DOPOs, and confirmed that the DOPOs well simulated the behavior of low-temperature spins.

Paper Details

Date Published: 20 February 2017
PDF: 6 pages
Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 1008812 (20 February 2017); doi: 10.1117/12.2255796
Show Author Affiliations
Hiroki Takesue, NTT Corp. (Japan)
Takahiro Inagaki, NTT Corp. (Japan)
Kensuke Inaba, NTT Corp. (Japan)
Ryan Hamerly, Stanford Univ. (United States)
Kyo Inoue, Osaka Univ. (Japan)
Yoshihisa Yamamoto, Stanford Univ. (United States)
Japan Science and Technology Agency (Japan)

Published in SPIE Proceedings Vol. 10088:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVI
Konstantin L. Vodopyanov; Kenneth L. Schepler, Editor(s)

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