损失引起的量子非互惠性

IF 6.6 1区 物理与天体物理 Q1 PHYSICS, APPLIED
Baijun Li, Yunlan Zuo, Le-Man Kuang, Hui Jing, Chaohong Lee
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引用次数: 0

摘要

非互易光子设备具有抗损耗和抗外部噪声的特性,因此在量子信息处理应用中大有可为。最近的研究进展表明,线性系统中的非互易光传输可以通过策略性地引入损耗来实现。然而,一个关键问题仍未得到解答:损耗能否作为产生非互惠量子相关性的资源加以利用?在这里,我们采取了一种反直觉的立场,通过工程损耗来产生一种重要的非互惠量子关联形式,称为非互惠光子封锁。我们研究了由两个非线性腔和一个线性腔组成的耗散三腔系统。损耗和非线性的相互作用导致了强健的非互惠单光子和双光子阻滞,并通过破坏性量子干涉得以实现。此外,我们还通过操纵两个非线性腔之间的相对相位,证明了这种非互惠光子阻断的可调谐性。值得注意的是,这使得非互惠性的方向发生了逆转。我们的研究不仅揭示了损耗工程量子非互易性的概念,还为量子非互易光子器件的设计开辟了一条途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Loss-induced quantum nonreciprocity

Loss-induced quantum nonreciprocity

Attribute to their robustness against loss and external noise, nonreciprocal photonic devices hold great promise for applications in quantum information processing. Recent advancements have demonstrated that nonreciprocal optical transmission in linear systems can be achieved through the strategic introduction of loss. However, a crucial question remains unanswered: can loss be harnessed as a resource for generating nonreciprocal quantum correlations? Here, we take a counterintuitive stance by engineering loss to generate a vital form of nonreciprocal quantum correlations, termed nonreciprocal photon blockade. We examine a dissipative three-cavity system comprising two nonlinear cavities and a linear cavity. The interplay of loss and nonlinearity leads to a robust nonreciprocal single- and two-photon blockade, facilitated by destructive quantum interference. Furthermore, we demonstrate the tunability of this nonreciprocal photon blockade by manipulating the relative phase between the two nonlinear cavities. Remarkably, this allows for the reversal of the direction of nonreciprocity. Our study not only sheds a light on the concept of loss-engineered quantum nonreciprocity but also opens up a pathway for the design of quantum nonreciprocal photonic devices.

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来源期刊
npj Quantum Information
npj Quantum Information Computer Science-Computer Science (miscellaneous)
CiteScore
13.70
自引率
3.90%
发文量
130
审稿时长
29 weeks
期刊介绍: The scope of npj Quantum Information spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies.
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