Single telecom photon heralding by wavelength multiplexing in an optical fiber
Single telecom photon heralding by wavelength multiplexing in an optical fiber
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DOI：
10.1007/s00340-015-6284-9
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发表时间：
2016-01
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影响因子：
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通讯作者：
A. Lenhard;Jos'e Brito;S. Kucera;M. Bock;J. Eschner;C. Becher
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文献类型：
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作者：
A. Lenhard;Jos'e Brito;S. Kucera;M. Bock;J. Eschner;C. Becher
我们证明了在一个单一的通信光纤的光的弱相干和量子态的复用。为此，我们利用自发参量下转换和量子频率转换产生光子对在854 nm和电信O波段。854 nm的先驱光子触发电信C波段激光脉冲。将通信单光子（O波段）和激光脉冲（C波段）组合并耦合到标准通信光纤。在光纤后面的弱相干和量子信号之间的低背景时间相关性示出了成功的复用。
We demonstrate the multiplexing of a weak coherent and a quantum state of light in a single telecommunication fiber. For this purpose, we make use of spontaneous parametric down conversion and quantum frequency conversion to generate photon pairs at 854 nm and the telecom O-band. The herald photon at 854 nm triggers a telecom C-band laser pulse. The telecom single photon (O-band) and the laser pulse (C-band) are combined and coupled to a standard telecom fiber. Low-background time correlation between the weak coherent and quantum signal behind the fiber shows successful multiplexing.