10-GHz-clock time-multiplexed non-degenerate optical parametric oscillator network with a variable planar lightwave circuit interferometer

A coherent XY machine (CXYM) is a physical spin simulator that can simulate the XY model by mapping XY spins onto the continuous phases of non-degenerate optical parametric oscillators (NOPOs). Here, we demonstrated a large-scale CXYM with >47,000 spins by generating 10-GHz-clock time-multiplexed...

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Bibliographic Details
Published in:Optics letters 2023-11, Vol.48 (21), p.5787-5790
Main Authors: Yonezu, Yuya, Inaba, Kensuke, Yamada, Yasuhiro, Ikuta, Takuya, Inagaki, Takahiro, Honjo, Toshimori, Takesue, Hiroki
Format: Article
Language:English
Subjects:
Circuits
Four-wave mixing
Interferometers
Multiplexing
Optical Parametric Oscillators
Parametric amplifiers
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Summary:A coherent XY machine (CXYM) is a physical spin simulator that can simulate the XY model by mapping XY spins onto the continuous phases of non-degenerate optical parametric oscillators (NOPOs). Here, we demonstrated a large-scale CXYM with >47,000 spins by generating 10-GHz-clock time-multiplexed NOPO pulses via four-wave mixing in a highly nonlinear fiber inside a fiber ring cavity. By implementing a unidirectional coupling from the ith pulse to the (i + 1)th pulse with a variable 1-pulse delay planar lightwave circuit interferometer, we successfully controlled the effective temperature of a one-dimensional XY spin network within two orders of magnitude.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.499993