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arXiv 1708.04523quant-phcs.ETphysics.app-ph
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电信范围内的室温固态量子发射器

Room-temperature solid state quantum emitters in the telecom range

Yu Zhou, Ziyu Wang, Abdullah Rasmita, Sejeong Kim, Amanuel Berhane, Zoltan Bodrog, Giorgio Adamo, Adam Gali, Igor Aharonovich, Wei-bo Gao

摘要:

按需单光子发射器(SPE)在包括量子计算、量子模拟、量子精密测量和量子通信在内的广泛量子技术中发挥着关键作用。在量子网络和量子密钥分发协议中,其中光子被用作飞行量子比特,由于减少的光纤损耗,电信波长操作是优选的。然而,尽管开发各种触发SPE平台的巨大努力,在室温和电信波长下工作的触发SPE的鲁棒源仍然缺失。在这里,我们报告了一个触发,光学稳定,室温固态SPE电信波长工作。发射器具有高光子纯度(约5%的多光子事件)和创纪录的高亮度约1.5 MHz。该发射归因于氮化镓(GAN)晶体中的局部缺陷。嵌入在技术成熟的半导体中的高性能SPE对于片上量子模拟器和实用的量子通信技术具有重要的应用前景。

英文摘要:

On demand single photon emitters (SPEs) play a key role across a broad range of quantum technologies, including quantum computation, quantum simulation, quantum metrology and quantum communications. In quantum networks and quantum key distribution protocols, where photons are employed as flying qubits, telecom wavelength operation is preferred due to the reduced fibre loss. However, despite the tremendous efforts to develop various triggered SPE platforms, a robust source of triggered SPEs operating at room temperature and the telecom wavelength is still missing. Here we report a triggered, optically stable, room temperature solid state SPE operating at telecom wavelengths. The emitters exhibit high photon purity (~ 5% multiphoton events) and a record-high brightness of ~ 1.5 MHz. The emission is attributed to localized defects in a gallium nitride (GaN) crystal. The high performance SPEs embedded in a technologically mature semiconductor are promising for on-chip quantum simulators and practical quantum communication technologies.

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