Kaur Manpreet, Singh Mandip
Department of Physical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Mohali, 140306, India.
Sci Rep. 2021 Dec 8;11(1):23636. doi: 10.1038/s41598-021-02650-z.
A transparent polarisation sensitive phase pattern makes a polarisation dependent transformation of quantum state of photons without absorbing them. Such an invisible pattern can be imaged with quantum entangled photons by making joint quantum measurements on photons. This paper shows a long path experiment to quantum image a transparent polarisation sensitive phase pattern with hyper-entangled photon pairs involving momentum and polarisation degrees of freedom. In the imaging configuration, a single photon interacts with the pattern while the other photon, which has never interacted with the pattern, is measured jointly in a chosen polarisation basis and in a quantum superposition basis of its position which is equivalent to measure its momentum. Individual photons of each hyper-entangled pair cannot provide a complete image information. The image is constructed by measuring the polarisation state and position of the interacting photon corresponding to a measurement outcome of the non-interacting photon. This paper presents a detailed concept, theory and free space long path experiments on quantum imaging of polarisation sensitive phase patterns.
一种透明的偏振敏感相位图案能够在不吸收光子的情况下对光子的量子态进行依赖于偏振的变换。通过对光子进行联合量子测量，这样一种不可见的图案可以用量子纠缠光子成像。本文展示了一个利用涉及动量和偏振自由度的超纠缠光子对来对透明偏振敏感相位图案进行量子成像的长程实验。在成像配置中，一个单光子与该图案相互作用，而另一个从未与该图案相互作用的光子，则在选定的偏振基以及其位置的量子叠加基中进行联合测量，这等同于测量其动量。每个超纠缠对中的单个光子无法提供完整的图像信息。通过测量与非相互作用光子的测量结果相对应的相互作用光子的偏振态和位置来构建图像。本文介绍了关于偏振敏感相位图案量子成像的详细概念、理论以及自由空间长程实验。
