Banaszek Konrad, Walmsley Ian A
Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK.
Opt Lett. 2003 Jan 1;28(1):52-4. doi: 10.1364/ol.28.000052.
We propose a design for a photon-counting detector that is capable of resolving multiphoton events. The basic element of the setup is a fiber loop, which traps the input field with the help of a fast electro-optic switch. A single weakly coupled avalanche photodiode is used to detect small portions of the signal field extracted from the loop. We analyze the response of the loop detector to an arbitrary input field and discuss both the reconstruction of the photon-number distribution of an unknown field from the count statistics measured in the setup and the application of the detector in conditional-state preparation.
我们提出了一种用于光子计数探测器的设计，该探测器能够分辨多光子事件。该装置的基本元件是一个光纤环，它借助一个快速电光开关来捕获输入场。使用单个弱耦合雪崩光电二极管来检测从环中提取的信号场的小部分。我们分析了环探测器对任意输入场的响应，并讨论了从装置中测量的计数统计重建未知场的光子数分布，以及探测器在条件态制备中的应用。
