用于铯基量子信息处理的亚mhz线宽单光子源

IF 6.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Frontiers of Physics Pub Date : 2023-07-12 DOI:10.1007/s11467-023-1317-z

Hai He, Peng-Fei Yang, Peng-Fei Zhang, Gang Li, Tian-Cai Zhang

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引用次数: 0

摘要

窄带宽、高纯度、大亮度的单光子源可以有效地与强耦合光微腔的材料量子比特相互作用，用于量子信息处理。在这里，我们实验证明了一个简并双共振单光子源，在852 nm，通过腔增强自发参数下转换过程，产生100%的占空比。该单光子源纯度高，二阶相关系数g (2)h(0) = 0.021，线宽窄，Δνsp =(800±13)kHz。该单光子源与铯原子D2线兼容，可用于基于铯的量子信息处理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Single-photon source with sub-MHz linewidth for cesium-based quantum information processing

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Single-photon source with sub-MHz linewidth for cesium-based quantum information processing

A single-photon source with narrow bandwidth, high purity, and large brightness can efficiently interact with material qubits strongly coupled to an optical microcavity for quantum information processing. Here, we experimentally demonstrate a degenerate doubly resonant single-photon source at 852 nm by the cavity-enhanced spontaneous parametric down-conversion process with a 100% duty cycle of generation. The single photon source possesses both high purity with a second-order correlation g ⁽²⁾_h (0) = 0.021 and narrow linewidth with Δν_sp = (800 ± 13) kHz. The single-photon source is compatible with the cesium atom D2 line and can be used for cesium-based quantum information processing.

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来源期刊

Frontiers of Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

9.20

自引率

9.30%

发文量

898

审稿时长

6-12 weeks

期刊介绍： Frontiers of Physics is an international peer-reviewed journal dedicated to showcasing the latest advancements and significant progress in various research areas within the field of physics. The journal's scope is broad, covering a range of topics that include: Quantum computation and quantum information Atomic, molecular, and optical physics Condensed matter physics, material sciences, and interdisciplinary research Particle, nuclear physics, astrophysics, and cosmology The journal's mission is to highlight frontier achievements, hot topics, and cross-disciplinary points in physics, facilitating communication and idea exchange among physicists both in China and internationally. It serves as a platform for researchers to share their findings and insights, fostering collaboration and innovation across different areas of physics.