Cavity-Free Scheme for Nondestructive Detection of a Single Optical Photon.
Cavity-Free Scheme for Nondestructive Detection of a Single Optical Photon.
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DOI：
10.1103/physrevlett.116.023601
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发表时间：
2015-06
影响因子：
8.6
通讯作者：
K. Xia;M. Johnsson;P. Knight;J. Twamley
中科院分区：
文献类型：
--
作者：
K. Xia;M. Johnsson;P. Knight;J. Twamley
探测单个光子而不吸收它是量子光学中的一个长期挑战。所有证明光子无损检测的实验都使用高质量的腔。我们提出了一个无腔方案的无损单光子探测。通过泵浦非线性介质，我们实现了场间拉比振荡，在单个信号光子存在的情况下，导致弱探测相干激光场发生π相移，而不破坏信号光子。我们的无腔方案与类似的基于腔的方案相比，具有快速的内在时间尺度。我们实现了一个完整的实空间多模相互作用的光子模式的数值分析，并确认我们的非破坏性计划在多模情况下的有效性。
Detecting a single photon without absorbing it is a long-standing challenge in quantum optics. All experiments demonstrating the nondestructive detection of a photon make use of a high quality cavity. We present a cavity-free scheme for nondestructive single-photon detection. By pumping a nonlinear medium we implement an interfield Rabi oscillation which leads to a ∼π phase shift on a weak probe coherent laser field in the presence of a single signal photon without destroying the signal photon. Our cavity-free scheme operates with a fast intrinsic time scale in comparison with similar cavity-based schemes. We implement a full real-space multimode numerical analysis of the interacting photonic modes and confirm the validity of our nondestructive scheme in the multimode case.