[9p-N202-1~17] 3.13 Silicon photonics, Photonics-electronics convergence, Optical control

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[9p-N202-10] Comparative Analysis of Random Unitary Matrix Generators based on Programmable Photonic Circuits

〇(D)Chun Ren¹, Ryota Tanomura¹, Takuo Tanemura¹ (1.The Univ. of Tokyo)

Keywords:

photonic integrated circuits,optical unitary converter,random unitary matrix

Programmable photonic circuits used for optical computing and quantum information processing can implement random unitary matrices by employing optical unitary converters (OUCs) based on either Mach-Zehnder interferometers (MZIs) or multiport directional couplers (MDCs). In this work, we analyze and compare the randomness of the matrices that can be generated by MZI-OUC and MDC-OUC, assuming the number of phase shifters is reduced. Our results suggest that for applications requiring generation of N×N random unitary matrices, the MDC-based approach allows for a reduction in the number of phase shifters from N² to 3N, highlighting its potential advantages in circuit efficiency.