Carbon nanotubes as emerging quantum-light sources
Carbon nanotubes as emerging quantum-light sources
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DOI：
10.1038/s41563-018-0109-2
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发表时间：
2018-08-01
期刊：
影响因子：
41.2
通讯作者：
Voisin, C.
中科院分区：
文献类型：
--
作者：
He, X.;Htoon, H.;Voisin, C.
量子计算和量子密码学的进展需要在室温下在电信波长中的有效的电触发单光子源。人们早就知道，半导体单壁碳纳米管（SWCNT）显示出强激子结合并在宽波长范围内发光，但它们的使用受到量子产率低和对光谱扩散和闪烁的高敏感性的阻碍。在这个角度来看，我们讨论了最近的进展，掌握单壁碳纳米管的光学性能的化学，电接触和谐振器耦合推进其作为量子光源的使用。我们描述了单光子纯度，产生效率和不可吸收性方面的最新结果。最后，我们认为主要的基本挑战来自于单壁碳纳米管的独特性能和最有前途的道路单壁碳纳米管为基础的芯片集成量子光子源。
Progress in quantum computing and quantum cryptography requires efficient, electrically triggered, single-photon sources at room temperature in the telecom wavelengths. It has been long known that semiconducting single-wall carbon nanotubes (SWCNTs) display strong excitonic binding and emit light over a broad range of wavelengths, but their use has been hampered by a low quantum yield and a high sensitivity to spectral diffusion and blinking. In this Perspective, we discuss recent advances in the mastering of SWCNT optical properties by chemistry, electrical contacting and resonator coupling towards advancing their use as quantum light sources. We describe the latest results in terms of single-photon purity, generation efficiency and indistinguishability. Finally, we consider the main fundamental challenges stemming from the unique properties of SWCNTs and the most promising roads for SWCNT-based chip integrated quantum photonic sources.