Fast Purcell-enhanced single photon source in 1,550-nm telecom band from a resonant quantum dot-cavity coupling.
Fast Purcell-enhanced single photon source in 1,550-nm telecom band from a resonant quantum dot-cavity coupling.
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来自共振量子点腔耦合的 1,550 nm 电信频段的快速 Purcell 增强单光子源。
DOI：
10.1038/srep00321
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发表时间：
2012
影响因子：
4.6
通讯作者：
Notomi, Masaya
中科院分区：
文献类型：
--
作者：
Birowosuto, Muhammad Danang;Sumikura, Hisashi;Matsuo, Shinji;Taniyama, Hideaki;van Veldhoven, Peter J.;Noetzel, Richard;Notomi, Masaya
1,550 nm电信波段的高比特率纳米腔单光子源是基于光纤的长距离量子通信网络发展所面临的挑战。在这里，我们报告了一个非常快的单光子源在1,550 nm的电信波段，这是通过一个大的珀塞尔增强，结果从一个单一的InAs量子点和InP光子晶体纳米腔的耦合。在共振时，自发发射率提高了5倍，从而在1，550 nm处获得了0.2 ns的创纪录的快速发射寿命。我们还表明，这种发射表现出增强的反聚束下降。这是在1,550 nm电信波段首次实现纳米腔增强单光子发射器。这种耦合量子点腔系统在电信波段，从而提供了一个明亮的高比特率的非经典单光子源，提供了有吸引力的新的机会，通过光纤的远程量子电信系统的发展。
High-bit-rate nanocavity-based single photon sources in the 1,550-nm telecom band are challenges facing the development of fibre-based long-haul quantum communication networks. Here we report a very fast single photon source in the 1,550-nm telecom band, which is achieved by a large Purcell enhancement that results from the coupling of a single InAs quantum dot and an InP photonic crystal nanocavity. At a resonance, the spontaneous emission rate was enhanced by a factor of 5 resulting a record fast emission lifetime of 0.2 ns at 1,550 nm. We also demonstrate that this emission exhibits an enhanced anti-bunching dip. This is the first realization of nanocavity-enhanced single photon emitters in the 1,550-nm telecom band. This coupled quantum dot cavity system in the telecom band thus provides a bright high-bit-rate non-classical single photon source that offers appealing novel opportunities for the development of a long-haul quantum telecommunication system via optical fibres.
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