Programmable time-multiplexed squeezed light source.
Programmable time-multiplexed squeezed light source.
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DOI：
10.1364/oe.476025
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发表时间：
2022-09
期刊：
影响因子：
3.8
通讯作者：
Hiroko Tomoda;Takato Yoshida;T. Kashiwazaki;T. Umeki;Y. Enomoto;S. Takeda
中科院分区：
文献类型：
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作者：
Hiroko Tomoda;Takato Yoshida;T. Kashiwazaki;T. Umeki;Y. Enomoto;S. Takeda
基于时间复用（TM）的连续变量（CV）方案是大规模量子信息处理（QIP）的主要方法之一。作为这种方法的基本组成部分，需要量子光源依次产生时间复用的压缩光脉冲；然而，传统的CV TM实验使用固定光源，只能输出具有相同压缩电平和相位的压缩脉冲。我们在这里展示了一个可编程的时间复用压缩光源，它可以在100ns以下的时间间隔内产生具有不同压缩电平和相位的连续压缩脉冲。生成模式可以由软件任意选择，而无需改变其硬件配置。这是通过使用波导光参量放大器和调制其连续泵浦光来实现的。我们的光源将实现各种大规模的CV QIP任务。
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.