利用强(多光子)相干态从实验中获得单光子弱值

IF 4.2 Q2 QUANTUM SCIENCE & TECHNOLOGY AVS quantum science Pub Date : 2022-11-28 DOI:10.1116/5.0137579
H. Wiseman, Aephraim M. Steinberg, M. Hallaji
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引用次数: 2

摘要

一种常见类型的弱值实验是在一种状态下准备单个粒子,弱测量另一种状态的占用数,并在找到第三种状态下的粒子时进行后选择(“点击”)。大多数弱值实验都是用光子进行的,但单光子的制备是困难的,而且速度很慢。在这里,我们证明了上面提到的弱值可以使用强(多光子)相干态来测量,同时仍然只需要一个点击检测器,如雪崩光电二极管。简单地从点击弱值中减去无点击弱值,并通过点击概率的简单函数来缩放答案。
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Obtaining a single-photon weak value from experiments using a strong (many-photon) coherent state
A common type of weak-value experiment prepares a single particle in one state, weakly measures the occupation number of another state, and post-selects on finding the particle in a third state (a “click”). Most weak-value experiments have been done with photons, but the heralded preparation of a single photon is difficult and slow of rate. Here, we show that the weak value mentioned above can be measured using strong (many-photon) coherent states, while still needing only a click detector such as an avalanche photodiode. One simply subtracts the no-click weak value from the click weak-value and scales the answer by a simple function of the click probability.
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CiteScore
9.90
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