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arXiv 2212.06307quant-ph
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非厄米非谐性诱导单光子发射

Non-Hermitian Anharmonicity Induces Single-Photon Emission

Anael Ben-Asher, Antonio I. Fernández-Domínguez, Johannes Feist

AI总结:

本研究提出一种基于非厄米非谐性(损耗非谐性)的单光子发射新机制,在含混合金属介质腔的两类系统中验证其可实现高重复率下的高纯度单光子发射,为量子信息应用的单光子源提供新途径。

摘要:

单光子源在量子信息应用中需求旺盛。实现单光子发射的典型方法是利用能级非谐性,即相干驱动场的单光子吸收会使系统偏离共振,从而阻止第二个光子的吸收。本文提出了一种通过非厄米非谐性(即损耗而非能级中的非谐性)实现单光子发射的新机制。我们在两类系统中验证了该机制,包括一个由弱耦合到二能级发射体的混合金属介质腔构成的可行方案,并表明该机制可在高重复率下产生高纯度单光子发射。

英文摘要:

Single-photon sources are in high demand for quantum information applications. A paradigmatic way to achieve single-photon emission is through anharmonicity in the energy levels, such that the absorption of a single photon from a coherent drive shifts the system out of resonance and prevents absorption of a second one. We identify a novel mechanism for single-photon emission through non-Hermitian anharmonicity, i.e., anharmonicity in the losses instead of in the energy levels. We demonstrate the mechanism in two types of systems, including a feasible setup consisting of a hybrid metallodielectric cavity weakly coupled to a two-level emitter, and show that it induces high-purity single-photon emission at high repetition rates.

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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