在光学系统中利用弱值放大模拟搜索算法  

Simulating Search Algorithm via Weak Value Amplification in Optical System

作　　者：刘洧宁 刘军浩 於亚飞[2] 张智明[1] Liu Weining;Liu Junhao;Yu Yafei;Zhang Zhiming(Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices,School of Information and Optoelectronic Science and Engineering,South China Normal University,Guangzhou,Guangdong 510006,China;Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,South China Normal University,Guangzhou,Guangdong 510006,China)

机构地区：[1]华南师范大学信息光电子科技学院广东省微纳光子功能材料与器件重点实验室,广东广州510006 [2]华南师范大学广东省量子调控工程与材料重点实验室,广东广州510006

出　　处：《光学学报》2022年第3期254-259,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61941501,61775062,11574092,61378012,91121023)。

摘　　要：提出了一种在光学系统中利用弱值放大和后选择来模拟搜索算法的方案。该方案将数据库编码在入射光束的横向坐标上,在光束的偏振态上进行预选择与后选择。首先讨论了一般型入射光束并获得一些结果,然后对高斯型入射光束进行了分析。结果表明通过适当地选择辅助系统的后选择态并且利用弱值放大,有可能仅用一次迭代就实现对数据库的搜索。We propose a new scheme of simulating search algorithm in an optical system via weak value amplification and post-selection.In this scheme,we encode the database on the transverse distribution of the input beam,and then perform pre-selection and post-selection on the polarization state of the input beam.We first discuss a general input beam and obtain some interesting results.Then we analysis a Gaussian input beam.Results show that by choosing the post-selection state of the auxiliary system properly and using the weak value amplification,it is possible that we can achieve a database search in only one iteration.

关 键 词：量子光学 量子信息处理 量子搜索算法 量子计算 弱值放大 

分 类 号：O431.2[机械工程—光学工程]