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arXiv:2209.09458 · Optics Express

Programmable time-multiplexed squeezed light source

Hiroko Tomoda, Takato O. Yoshida, Takahiro Kashiwazaki, Takeshi Umeki, Yutaro Enomoto, Shuntaro Takeda

Published Nov 24, 2022• 6 citations

Abstract

One of the leading approaches to large-scale quantum information processing (QIP) is the continuous-variable (CV) scheme based on time multiplexing (TM). As a fundamental building block for this approach, quantum light sources to sequentially produce time-multiplexed squeezed-light pulses are required; however, conventional CV TM experiments have used fixed light sources that can only output the squeezed pulses with the same squeezing levels and phases. We here demonstrate a programmable time-multiplexed squeezed light source that can generate sequential squeezed pulses with various squeezing levels and phases at a time interval below 100 ns. The generation pattern can be arbitrarily chosen by software without changing its hardware configuration. This is enabled by using a waveguide optical parametric amplifier and modulating its continuous pump light. Our light source will implement various large-scale CV QIP tasks.

DOI: 10.1364/oe.476025

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