{"title":"Nonreciprocal photon blockade based on Zeeman splittings induced by a fictitious magnetic field","authors":"Xin Su, Biao-Bing Jin, Jiangshan Tang, Keyu Xia","doi":"10.1088/0256-307x/41/7/074202","DOIUrl":null,"url":null,"abstract":"\n Quantum nonreciprocity, such as nonreciprocal photon blockade, has attracted great attention due to its unique applications in quantum information processing. Its implementation primarily relies on rotating nonlinear systems, based on the Sagnac effect. Here, we propose an all-optical approach to achieve nonreciprocal photon blockade in an on-chip microring resonator coupled to a V-type Rb atom, which arises from the Zeeman splittings of the atomic hyperfine sublevels induced by the fictitious magnetic field of a circularly polarized control laser. The system manifests single-photon blockade or multi-photon tunneling when driven from opposite directions. This nonreciprocity results from the directional detunings between the countercirculating probe fields and the V-type atom, which does not require the mechanical rotation and facilitates integration. Our work opens up a new route to achieve on-chip integrable quantum nonreciprocity, enabling applications in chiral quantum technologies.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/0256-307x/41/7/074202","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Quantum nonreciprocity, such as nonreciprocal photon blockade, has attracted great attention due to its unique applications in quantum information processing. Its implementation primarily relies on rotating nonlinear systems, based on the Sagnac effect. Here, we propose an all-optical approach to achieve nonreciprocal photon blockade in an on-chip microring resonator coupled to a V-type Rb atom, which arises from the Zeeman splittings of the atomic hyperfine sublevels induced by the fictitious magnetic field of a circularly polarized control laser. The system manifests single-photon blockade or multi-photon tunneling when driven from opposite directions. This nonreciprocity results from the directional detunings between the countercirculating probe fields and the V-type atom, which does not require the mechanical rotation and facilitates integration. Our work opens up a new route to achieve on-chip integrable quantum nonreciprocity, enabling applications in chiral quantum technologies.
量子非互易性,如非互易光子封锁,因其在量子信息处理中的独特应用而备受关注。它的实现主要依赖于基于萨格纳克效应的旋转非线性系统。在这里,我们提出了一种全光学方法,在耦合到 V 型掺铒原子的片上微孔谐振器中实现非互易光子阻断,这种阻断是由圆偏振控制激光器的虚构磁场诱导的原子超线性子级的泽曼分裂引起的。当从相反方向驱动时,系统表现出单光子阻滞或多光子隧道现象。这种非互惠性源于反循环探针磁场与 V 型原子之间的定向调谐,无需机械旋转,有利于整合。我们的工作为实现片上可积分量子非互斥性开辟了一条新途径,使手性量子技术的应用成为可能。
期刊介绍:
Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.