Chalopin Benoît, Scazza Francesco, Fabre Claude, Treps Nicolas
Laboratoire Kastler Brossel, Université Pierre et Marie Curie, ENS, CNRS, Paris, France.
Opt Express. 2011 Feb 28;19(5):4405-10. doi: 10.1364/OE.19.004405.
Quantum computation and communication protocols require quantum resources which are in the continuous variable regime squeezed and/or quadrature entangled optical modes. To perform more and more complex and robust protocols, one needs sources that can produce in a controlled way highly multimode quantum states of light. One possibility is to mix different single mode quantum resources. Another is to directly use a multimode device, either in the spatial or in the frequency domain. We present here the first experimental demonstration of a device capable of producing simultaneously several squeezed transverse modes of the same frequency and which is potentially scalable. We show that this device, which is an Optical Parametric Oscillator using a self-imaging cavity, produces a multimode quantum resource made of three squeezed transverse modes.
量子计算和通信协议需要量子资源，这些资源处于连续变量 regime 中压缩和/或正交纠缠光模式。为了执行越来越复杂和稳健的协议，人们需要能够以可控方式产生高度多模光量子态的光源。一种可能性是混合不同的单模量子资源。另一种是直接使用空间或频域中的多模器件。我们在此展示了首个能够同时产生同一频率的多个压缩横向模式且具有潜在可扩展性的器件的实验演示。我们表明，该器件是一个使用自成像腔的光学参量振荡器，它产生由三个压缩横向模式组成的多模量子资源。
