State-independent quantum tomography of a single-photon state by photon-number-resolving measurements
State-independent quantum tomography of a single-photon state by photon-number-resolving measurements
复制标题
通过光子数分辨测量进行单光子态的与状态无关的量子层析成像
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
O. Pfister
中科院分区：
文献类型：
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作者：
Rajveer Nehra;A. Win;M. Eaton;N. Sridhar;R. Shahrokhshahi;T. Gerrits;A. Lita;S. Nam;O. Pfister
利用跃迁边传感器（TES）的光子数分辨测量，利用量子态层析术重建了窄带单光子态的Wigner准概率分布，系统效率为58（2）%.该方法不对测量状态的性质做任何假设，除了TES对光子通量的限制。在原始数据中观察到维格纳函数的负性，而没有对退相干进行任何推断或校正。
The Wigner quasiprobability distribution of a narrowband single-photon state was reconstructed by quantum state tomography using photon-number-resolving measurements with transition-edge sensors (TES) at system efficiency 58(2)%. This method makes no assumptions on the nature of the measured state, save for the limitation on photon flux imposed by the TES. Negativity of the Wigner function was observed in the raw data without any inference or correction for decoherence.