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arXiv 2108.01400quant-ph
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可编程光子对源

Programmable photon pair source

Liang Cui, Jinjin Wang, Jiamin Li, Mingyi Ma, Z. Y. Ou, Xiaoying Li

摘要:

脉冲泵浦非线性参量过程产生的光子对是量子信息科学的重要组成部分。在实际应用中,光子对光谱特性的设计是至关重要的。在这篇文章中,我们展示了一个可编程的光子对源,利用两级非线性干涉仪与相位控制装置。相位控制装置通过可任意定义的可编程相位函数引入相移。通过适当设计相位函数,可以自由定制和改变源的输出频谱,而无需更换系统中的任何硬件组件。除了证明产生的光子对的可因式分解,正相关,负相关的光谱,分别,我们表明,该源的输出可以定制成多通道光谱可因式分解的光子对,而不牺牲效率。这种光源能够根据所选择的应用随意修改光子对的光谱,是量子信息科学的有力工具。

英文摘要:

Photon pairs produced by the pulse-pumped nonlinear parametric processes have been a workhorse of quantum information science. Engineering the spectral property of the photon pairs is crucial in practical applications. In this article, we demonstrate a programmable photon pair source by exploiting a two-stage nonlinear interferometer with a phase-control device. The phase-control device introduces phase shifts by a programmable phase function that can be arbitrarily defined. With a properly designed phase function, the output spectrum of the source can be freely customized and changed without replacing any hardware component in the system. In addition to demonstrating the generation of photon pairs with factorable, positively-correlated, and negatively-correlated spectra, respectively, we show that the output of the source can be tailored into multi-channel spectrally factorable photon pairs without sacrificing efficiency. Such a source, having the ability to modify the spectrum of the photon pairs at will according to the chosen application, is a powerful tool for quantum information science.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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