[7p-A410-1~9] 4.9 Quantum Optics

▲ [7p-A410-3] [JSAP-OSA Joint Symposia 2017 Invited Talk] Solving intractable problems with coherent Ising machine

〇Hiroki Takesue¹、Takahiro Inagaki¹、Kensuke Inaba¹、Toshimori Honjo¹、Takuya Ikuta¹、Hiroyuki Uchiyama^1,2、Koji Enbutsu³、Takeshi Umeki³、Ryoichi Kasahara³ (1.NTT BRL、2.NTT SIC、3.NTT DTL)

キーワード：optical parametric oscillator, combinatorial optimization problem, phase sensitive amplification

We introduce the recent progress of coherent Ising machine (CIM), which finds solutions to complex combinatorial optimization problems using a network of degenerate optical parametric oscillators (DOPO). We describe our effort to generate time-multiplexed DOPOs using long-distance fiber cavities including telecom-band phase sensitive amplifiers. We then present our experiments where we found solutions to complex combinatorial optimization problems using a CIM with measurement-feedback scheme. Finally, a future perspective of the CIM project will briefly described.