Integrated optomechanical single-photon frequency shifter
Integrated optomechanical single-photon frequency shifter
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DOI：
10.1038/nphoton.2016.206
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发表时间：
2016-12-01
期刊：
影响因子：
35
通讯作者：
Tang, Hong X.
中科院分区：
文献类型：
--
作者：
Fan, Linran;Zou, Chang-Ling;Tang, Hong X.
操纵单光子的能力对于基础量子光学研究和量子通信的实际实现至关重要。虽然在控制空间、时间、自旋和轨道角动量自由度方面取得了非凡的进展（1-6），但迄今为止单光子的频域控制依赖于非线性光学效应，这面临着诸如噪声光子、窄带宽和要求苛刻的光学滤波等障碍（7-15）。在这里，我们展示了第一个集成的光机械单光子移频器与近单位效率。在电信波长上实现了高达150 GHz的频移，而没有可测量的附加噪声，并且通过不同颜色的双光子之间的量子干涉验证了量子相干性的保持。这种单光子移频器对于增加量子通信的信道容量和补偿量子系统之间的频率失配将是非常宝贵的，为混合量子网络铺平道路。
The ability to manipulate single photons is of critical importance for fundamental quantum optics studies and practical implementations of quantum communications. While extraordinary progresses have been made in controlling spatial, temporal, spin and orbit angular momentum degrees of freedom(1-6), frequency-domain control of single photons so far relies on nonlinear optical effects, which have faced obstacles such as noise photons, narrow bandwidth and demanding optical filtering(7-15). Here, we demonstrate the first integrated optomechanical single-photon frequency shifter with nearunity efficiency. A frequency shift up to 150 GHz at telecom wavelength is realized without measurable added noise and the preservation of quantum coherence is verified through quantum interference between twin photons of different colours. This single- photon frequency shifter will be invaluable for increasing the channel capacity of quantum communications and compensating frequency mismatch between quantum systems, paving the road towards a hybrid quantum network.