Time-Domain Universal Linear-Optical Operations for Universal Quantum Information Processing

• URL: http://arxiv.org/abs/2210.15931v2
• Date: Mon, 31 Jul 2023 07:19:30 GMT
• Title: Time-Domain Universal Linear-Optical Operations for Universal Quantum Information Processing
• Authors: Kazuma Yonezu (1), Yutaro Enomoto (1), Takato Yoshida (1), Shuntaro Takeda (1) ((1) Department of Applied Physics, School of Engineering, The University of Tokyo)
• Abstract summary: We show a scalable dual-loop optical circuit suitable for universal quantum information processing (QIP) Our circuit can be scaled up just by making the outer loop longer and also extended to universal quantum computers by incorporating feedforward systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We demonstrate universal and programmable three-mode linear optical operations in the time domain by realizing a scalable dual-loop optical circuit suitable for universal quantum information processing (QIP). The programmability, validity, and deterministic operation of our circuit are demonstrated by performing nine different three-mode operations on squeezed-state pulses, fully characterizing the outputs with variable measurements, and confirming their entanglement. Our circuit can be scaled up just by making the outer loop longer and also extended to universal quantum computers by incorporating feedforward systems. Thus, our work paves the way to large-scale universal optical QIP.

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