Abstract

A coherent Ising machine based on degenerate optical parametric oscillators (DOPOs) is drawing attention as a way to find a solution to the ground-state search problem of the Ising model. Here we report the generation of time-multiplexed DOPOs at a 10 GHz clock frequency. We successfully generated >50,000 DOPOs using dual-pump four-wave mixing in a highly nonlinear fiber that formed a 1 km cavity, and observed phase bifurcation of the DOPOs, which suggests that the DOPOs can be used as stable artificial spins. In addition, we demonstrated the generation of more than 1 million DOPOs by extending the cavity length to 21 km. We also confirmed that the binary numbers obtained from the DOPO phase-difference measurement passed the NIST random number test, which suggests that we can obtain unbiased artificial spins.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Binary phase oscillation of two mutually coupled semiconductor lasers

Shoko Utsunomiya, Naoto Namekata, Kenta Takata, Daisuke Akamatsu, Shuichiro Inoue, and Yoshihisa Yamamoto
Opt. Express 23(5) 6029-6040 (2015)

Quantum random number generator using a microresonator-based Kerr oscillator

Yoshitomo Okawachi, Mengjie Yu, Kevin Luke, Daniel O. Carvalho, Michal Lipson, and Alexander L. Gaeta
Opt. Lett. 41(18) 4194-4197 (2016)

All-optical fast random number generator

Pu Li, Yun-Cai Wang, and Jian-Zhong Zhang
Opt. Express 18(19) 20360-20369 (2010)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription