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arXiv 2504.03475quant-ph
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一种全光纤、兼容电信技术、室温下的单光子源

An all-fibred, telecom technology compatible, room temperature, single-photon source

Université Côte d'Azur(蔚蓝海岸大学);Majulab International Joint Research Unit UMI 3654, CNRS, Université Côte d’Azûr, Sorbonne Université, National University of Singapore, Nanyang Technological University(马久拉国际联合研究单元(UMI 3654),法国国家科学研究中心,蔚蓝海岸大学,索邦大学,新加坡国立大学,南洋理工大学);Centre de Recherche sur l’Hétéro Epitaxie et ses Applications (CRHEA)(异质外延及其应用研究中心)

Nathan Lecaron, Max Meunier, Grégory Sauder, Romain Dalidet, Yoann Pelet, Sébastien Tanzilli, Jesus Zuniga-Pérez, Olivier Alibart

AI总结:

本文利用电信技术和GaN晶体点缺陷,首次开发出室温运行、发射电信O波段的全光纤单光子源,在1292 nm波长实现高亮度与高纯度,为可移植量子密码学设备集成提供潜力。

摘要:

单光子源是基础量子光学和量子信息网络的基本构建单元。其广泛应用目前受到非实用特性的阻碍,例如在低温下运行以及发射波长位于电信窗口之外。利用电信技术和 GaN 晶体中的点缺陷,我们首次开发出一种全光纤单光子源,该源在室温下运行,发射电信 O 波段光子并满足电信光子学标准。我们表征了在 1292 nm 波长下产生单光子的发射器,其 13 nm 的光谱展宽与 CWDM 通道兼容,亮度为每 mW 泵浦功率 25 kcps。该源在室温下显示出 16.5 的信噪比和 0.059 的自相关度(纯度),展现出集成到可移植量子密码学设备中的巨大潜力。

英文摘要:

Single photon sources are essential building blocks for fundamental quantum optics but also for quantum information networks. Their widespread is currently hindered by unpractical features, such as operation at cryogenic temperature and emission wavelength lying outside telecom windows. Taking advantage of telecom technology and point defects in GaN crystals, we present, for the first time, the development of a fully-fibred source of single photons operating at room temperature, emitting photons in the telecom O-band and fulfilling the standards of telecom photonics. We characterise an emitter producting single photons at the wavelength of 1292\,nm, a spectral broadening compatible with CWDM channels of 13\,nm, and a brightness of 25 kcps per mW of pump power. The source shows a signal-to-noise ratio of 16.5 and an autocorrelation degree (purity) of 0,059 at room temperature, showing high potential for being integrated transportable quantum cryptography devices.

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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