A single shot coherent Ising machine based on a network of injection-locked multicore fiber lasers

Nature Communications
Masoud BabaeianN Peyghambarian

Abstract

Combinatorial optimization problems over large and complex systems have many applications in social networks, image processing, artificial intelligence, computational biology and a variety of other areas. Finding the optimized solution for such problems in general are usually in non-deterministic polynomial time (NP)-hard complexity class. Some NP-hard problems can be easily mapped to minimizing an Ising energy function. Here, we present an analog all-optical implementation of a coherent Ising machine (CIM) based on a network of injection-locked multicore fiber (MCF) lasers. The Zeeman terms and the mutual couplings appearing in the Ising Hamiltonians are implemented using spatial light modulators (SLMs). As a proof-of-principle, we demonstrate the use of optics to solve several Ising Hamiltonians for up to thirteen nodes. Overall, the average accuracy of the CIM to find the ground state energy was ~90% for 120 trials. The fundamental bottlenecks for the scalability and programmability of the presented CIM are discussed as well.

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Citations

Apr 30, 2020·Scientific Reports·Dan T NguyenNicholas F Borrelli
Oct 14, 2020·Proceedings of the National Academy of Sciences of the United States of America·Sri Krishna VadlamaniEli Yablonovitch
Aug 7, 2021·Physical Review Letters·Yisheng FangZhichao Ruan
Sep 30, 2021·Science Advances·Toshimori HonjoHiroki Takesue
Mar 6, 2020··Hiroki Takesue, Hiroki Takesue
Mar 6, 2020··Hiroki Takesue, Hiroki Takesue

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Software Mentioned

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