Quantum rangefinding
Quantum rangefinding
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DOI：
10.1364/oe.399902
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发表时间：
2020-12-07
期刊：
影响因子：
3.8
通讯作者：
Rarity, John
中科院分区：
文献类型：
--
作者：
Frick, Stefan;McMillan, Alex;Rarity, John
在非简并挤压器中产生的量子光具有许多应用，例如子散粒噪声传输测量，以最大化由一个光子或量子照明提取的信息，以增加目标检测的概率。然而，迄今为止的任何应用都未能考虑这些实验中经常使用的二分下转换光子态的一半的热特性。我们在这里表明，一个最大的混合状态，通常被视为滋扰，确实可以用来提取信息的对象的位置，而在同一时间提供有效的照明对其他热或背景光。由The Optical Society根据Creative Commons Attribution 4.0 License条款发布。
Quantum light generated in non-degenerate squeezers has many applications such as sub-shot-noise transmission measurements to maximise the information extracted by one photon or quantum illumination to increase the probability in target detection. However, any application thus far fails to consider the thermal characteristics of one half of the bipartite down-converted photon state often used in these experiments. We show here that a maximally mixed state, normally viewed as nuisance, can indeed be used to extract information about the position of an object while at the same time providing efficient camouflaging against other thermal or background light. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.