title: Binary phase oscillation of two mutually coupled semiconductor lasers.
abstract: A two-site Ising model is implemented as an injection-locked laser network consisting of a single master laser and two mutually coupled slave lasers. We observed ferromagnetic and antiferromagnetic orders in the in-phase and out-of-phase couplings between the two slave lasers. Their phase difference is locked to either 0 or π even if the coupling path is continuously modulated. The system automatically selects the oscillation frequency to satisfy the in-phase or out-of-phase coupling condition, when the mutual coupling dominates over the injection-locking by the master laser.
authors.forename: Shoko
authors.initials: S
authors.lastname: Utsunomiya
authors.forename: Naoto
authors.initials: N
authors.lastname: Namekata
authors.forename: Kenta
authors.initials: K
authors.lastname: Takata
authors.forename: Daisuke
authors.initials: D
authors.lastname: Akamatsu
authors.forename: Shuichiro
authors.initials: S
authors.lastname: Inoue
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Yamamoto