Quantum digital spiral imaging
Quantum digital spiral imaging
复制标题
量子数字螺旋成像
DOI：
10.1038/lsa.2014.34
复制
发表时间：
2014-03-01
影响因子：
19.4
通讯作者：
Romero, Jacquiline
中科院分区：
文献类型：
--
作者：
Chen, Lixiang;Lei, Jijin;Romero, Jacquiline
我们证明了数字螺旋成像与高维轨道角动量（OAM）纠缠的组合可以用于有效地探测和识别纯相位对象，其中探测光不一定接触对象，通过实验，非局部分解的非整数纯相位涡旋的OAM纠缠光子对。纠缠光子由参量下转换产生，然后用空间光调制器和单模光纤测量。在闲频光子中定义分数相位涡旋，通过扫描信号光子中的OAM态，非局域地获得相应的螺旋谱。我们用双光子Klyshko图像和有效维数概念性地说明了我们的结果，以证明相关量子OAM信道的高维性质。我们的研究结果是一个概念证明，利用高维纠缠的量子成像技术可以潜在地用于遥感。
We demonstrate that the combination of digital spiral imaging with high-dimensional orbital angular momentum (OAM) entanglement can be used for efficiently probing and identifying pure phase objects, where the probing light does not necessarily touch the object, via the experimental, non-local decomposition of non-integer pure phase vortices in OAM-entangled photon pairs. The entangled photons are generated by parametric downconversion and then measured with spatial light modulators and single-mode fibers. The fractional phase vortices are defined in the idler photons, while their corresponding spiral spectra are obtained non-locally by scanning the measured OAM states in the signal photons. We conceptually illustrate our results with the biphoton Klyshko picture and the effective dimensionality to demonstrate the high-dimensional nature of the associated quantum OAM channels. Our result is a proof of concept that quantum imaging techniques exploiting high-dimensional entanglement can potentially be used for remote sensing.