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arXiv 2301.09115quant-ph
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手性奇异点处的缀饰束缚态

Dressed bound states at chiral exceptional points

Yuwei Lu, Haishu Tan, Zeyang Liao

AI总结:

本研究利用开放腔的非厄米性,在手性奇异点处实现两类缀饰束缚态,并展示其在量子光学中的应用,为量子态控制提供新途径。

摘要:

原子-光子缀饰态是量子光学的基本概念。在此,我们证明可以利用开放腔的非厄米性来形成缀饰束缚态(DBS),并在运行于手性奇异点的微环谐振器中识别出两类DBS:空位型DBS和Friedrich-Wintgen DBS。利用解析的DBS条件,我们表明当原子耦合到作为光子波函数节点的驻波模式时,会出现空位型DBS,因此该DBS不受腔耗散影响,并以腔共振处光谱密度为零为特征。而Friedrich-Wintgen DBS可以通过连续调谐系统参数(如原子-光子失谐)来获得,并通过发射光谱中消失的Rabi峰(强耦合反交叉中的一个异常特征)得到证实。我们还展示了所提出的DBS的量子光学应用。我们的工作展示了通过开放量子系统的非厄米性进行量子态控制,并为手性奇异点处的DBS提供了清晰的物理图像,这在构建用于传感、光子存储和非经典光产生的高性能量子器件方面具有巨大潜力。

英文摘要:

Atom-photon dressed states are a basic concept of quantum optics. Here, we demonstrate that the non-Hermiticity of open cavity can be harnessed to form the dressed bound states (DBS) and identify two types of DBS, the vacancy-like DBS and Friedrich-Wintgen DBS, in a microring resonator operating at a chiral exceptional point. With the analytical DBS conditions, we show that the vacancy-like DBS occurs when an atom couples to the standing wave mode that is a node of photonic wave function, and thus is immune to the cavity dissipation and characterized by the null spectral density at cavity resonance. While the Friedrich-Wintgen DBS can be accessed by continuously tuning the system parameters, such as the atom-photon detuning, and evidenced by a vanishing Rabi peak in emission spectrum, an unusual feature in the strong-coupling anticrossing. We also demonstrate the quantum-optics applications of the proposed DBS. Our work exhibits the quantum states control through non-Hermiticity of open quantum system and presents a clear physical picture on DBS at chiral exceptional points, which holds great potential in building high-performance quantum devices for sensing, photon storage, and nonclassical light generation.

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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