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Network of time-multiplexed optical parametric oscillators as a coherent Ising machine

Marandi, Alireza and Wang, Zhe and Takata, Kenta and Byer, Robert L. and Yamamoto, Yoshihisa (2014) Network of time-multiplexed optical parametric oscillators as a coherent Ising machine. Nature Photonics, 8 (12). pp. 937-942. ISSN 1749-4885.

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Finding the ground states of the Ising Hamiltonian maps to various combinatorial optimization problems in biology, medicine, wireless communications, artificial intelligence and social network. So far, no efficient classical and quantum algorithm is known for these problems and intensive research is focused on creating physical systems—Ising machines—capable of finding the absolute or approximate ground states of the Ising Hamiltonian. Here, we report an Ising machine using a network of degenerate optical parametric oscillators (OPOs). Spins are represented with above-threshold binary phases of the OPOs and the Ising couplings are realized by mutual injections7. The network is implemented in a single OPO ring cavity with multiple trains of femtosecond pulses and configurable mutual couplings, and operates at room temperature. We programmed a small non-deterministic polynomial time-hard problem on a 4-OPO Ising machine and in 1,000 runs no computational error was detected.

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URLURL TypeDescription Paper ReadCube access
Marandi, Alireza0000-0002-0470-0050
Byer, Robert L.0000-0003-1331-0318
Yamamoto, Yoshihisa0000-0002-4150-6804
Additional Information:© 2014 Macmillan Publishers Limited. Received 30 June 2014; accepted 19 September 2014; published online 26 October 2014. The authors thank S.E. Harris, H. Mabuchi, M. Armen, S. Utsunomiya, S. Tamate, K. Yan and Y. Haribara for discussions and K. Ingold, C.W. Rudy, C. Langrock and K. Urbanek for experimental support. The work is supported by the FIRST Quantum Information Processing project. Author Contributions: A.M. and Y.Y. conceived the idea and designed the experiment. A.M. and K.T. carried out the experiment. Z.W. performed the numerical simulations. Y.Y. and R.L.B. guided the work. A.M. wrote the manuscript, with input from all authors. The authors declare no competing financial interests.
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FIRST Quantum Information Processing projectUNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20180612-111046262
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87003
Deposited By: George Porter
Deposited On:13 Jun 2018 14:45
Last Modified:09 Mar 2020 13:19

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