对飞秒光学频率梳进行量子操控的实验研究

项目名称： 对飞秒光学频率梳进行量子操控的实验研究

项目编号： No.61205107

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 叶晨光

作者单位： 首都师范大学

项目金额： 27万元

中文摘要： 量子信息科学作为新兴的交叉领域近几年来取得了迅猛发展并受到了广泛关注，我国也将量子信息与量子通讯列入重大科学研究计划。光学频率梳作为新兴的测量、计量手段在量子信息研究中占有重要的一席之地，但随着技术的发展、测量精度的提高，测量很快就逼近散粒噪声水平。因此对光学频率梳的噪声控制及量子操控的重要性日益显现出来，预计很快将成为光学频率梳相关研究中不可缺少的环节，国外已有研究组开展了对光学频率梳进行压缩的研究。本项目计划对光学频率梳的量子特性进行研究，并在实验上实现对光学频率梳在量子层面进行操控，使用光学参量放大器对光学频率梳所产生的压缩态进行二次压缩以提高压缩质量、纯化压缩并且旋转压缩分量以实现将一种压缩态转换为另一种压缩态的实验研究。以光学频率梳的压缩态作为研究对象、把压缩态进行二次压缩、压缩旋转的研究目前国内外未见报道，有着广阔的前景，同时也对光学频率梳量子特性的研究有重要意义。

中文关键词： 飞秒光学频率梳；量子操控；参量放大器；；

英文摘要： Quantum information science as emerging cross-disciplinary in recent years has achieved rapid development and received considerable attention. Quantum information and quantum communication were included in the national major scientific research programs. The optical frequency comb as a new measurement technique in quantum information research occupies an important place, but as technology development and improvement of measurement accuracy, measurement quickly approaching the shot noise level. Therefore, have increasingly shown the importance of noise control and quantum manipulation of the optical frequency comb, is expected to soon become an indispensable part of the optical frequency comb. This project plans to study the quantum properties of the optical frequency comb, and experimentally manipulate it at the quantum level. Specifically, a squeezed states generated by optical frequency comb will be squeezed again using optical parametric amplifiers to improve the quality of squeeze, we call this technique squeeze purifying. And we will also demonstrate the rotation of the squeezing component in order to transform one squeezed state to another one. Take squeezed states produced by optical frequency comb as the research object, perform further squeezing and squeeze rotation of a given squeezed state squeezed st

英文关键词： femtosecond optical frequency comb；quantum manipulation；optical parametric amplifier；；