- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

摘要

量子度量学主要是利用量子效应来提高参数估计的精度, 以期突破标准量子极限, 甚至达到海森伯极限. 本文研究了一般光子增加双模压缩真空态作为马赫-曾德尔干涉仪的探测态时, 在何种情况下能够提高待测相位的测量精度. 根据量子Fisher信息理论, 尽管在探测态具有相同的平均光子数这一约束条件下, 对称的和非对称的光子增加操作并不能提高相位的测量精度. 但若是在给定初始压缩参数的情况下, 对称的和非对称的光子增加操作却能够增强相位的测量精度. 另外, 基于宇称测量的研究结果表明, 对于对称光子增加双模压缩真空态, 只有当待测相位趋于零时, 宇称测量才是最优测量. 而对于非对称光子增加双模压缩真空态, 宇称测量并不是最优测量方案.

关键词:

Abstract

Quantum metrology is to estimate accurately the value of an unknown parameter with the assistance of the quantum effects, in order to break through the standard quantum limit, even reach the Heisenberg limit. In this work, we study the performance of a general photon-added two-mode squeezed vacuum state that is taken as a detection state of a Mach-Zehnder interferometer. Based on quantum Fisher information, within the constraint on the total mean photon number, symmetric and asymmetric photon addition cannot improve the ultimate phase sensitivity. However, for a given initial squeezing parameter, on this occasion, the symmetric and asymmetric photon addition can improve the ultimate phase sensitivity. Compared with the asymmetric photon-added two-mode squeezed vacuum state, the symmetric one can well improve the ultimate phase sensitivity. This may be because it is always better to implement the symmetric photon addition rather than the asymmetric one in order to increase the mean photon number of the resulting state. On the other hand, via parity detection, the symmetric and asymmetric photon-added two-mode squeezed vacuum state can indeed improve the phase sensitivity of a Mach-Zehnder interferometer for a given initial squeezing parameter. Based on the parity detection, within a constraint on the mean photon number, although the two-mode squeezed vacuum state can give the better phase sensitivity at the optimal phase shift ( φ= 0), the phase sensitivity offered by the symmetric and asymmetric photon-added two-mode squeezed vacuum states are both more stable around φ= 0 than by the two-mode squeezed vacuum state. In addition, we show that for the symmetric photon-added two-mode squeezed vacuum state, parity detection is an optimal detection only when the optimal phase shift approaches to zero. When the phase shift slightly deviates from zero, the parity detection is not an optimal detection scheme. Finally, for all values of the phase shift, our results also clearly show that the parity detection is not an optimal detection scheme for the asymmetric photon-added two-mode squeezed vacuum state serving as an interferometer state.

Keywords:

作者及机构信息

1.
2.

通信作者:王帅,wshslxy@jsut.edu.cn

基金项目:国家级-国家自然科学基金(11404040)

Authors and contacts

1.
2.

Corresponding author:Wang Shuai,wshslxy@jsut.edu.cn

文章全文: translate this paragraph

参考文献

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]
[43]
[44]
[45]
[46]
[47]
[48]
[49]

施引文献

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]
[43]
[44]
[45]
[46]
[47]
[48]
[49]

[1]	丁永今, 曹士英, 林百科, 王强, 韩羿, 方占军.基于电光晶体马赫-曾德干涉仪的载波包络偏移频率调节方法. 必威体育下载 , 2022, 71(14): 144203.doi:10.7498/aps.71.20220147
[2]	王坤, 段高燕, 郎佩琳, 赵玉芳, 刘尖斌, 宋钢.基于银纳米链的马赫-曾德干涉仪结构的生物传感器. 必威体育下载 , 2022, 71(1): 017301.doi:10.7498/aps.71.20211420
[3]	王坤, 段高燕, 郎佩琳, 赵玉芳, 刘尖斌, 宋钢.基于银纳米链的马赫-曾德干涉仪结构的生物传感器. 必威体育下载 , 2021, (): .doi:10.7498/aps.70.20211420
[4]	冯海冉, 李鹏, 岳现房.初态对线型分子体系量子速度极限度量的影响. 必威体育下载 , 2019, 68(5): 050201.doi:10.7498/aps.68.20181942
[5]	鹿博, 韩成银, 庄敏, 柯勇贯, 黄嘉豪, 李朝红.超冷原子系综的非高斯纠缠态与精密测量. 必威体育下载 , 2019, 68(4): 040306.doi:10.7498/aps.68.20190147
[6]	王灿灿.量子纠缠与宇宙学弗里德曼方程. 必威体育下载 , 2018, 67(17): 179501.doi:10.7498/aps.67.20180813
[7]	成健, 冯晋霞, 李渊骥, 张宽收.基于量子增强型光纤马赫-曾德尔干涉仪的低频信号测量. 必威体育下载 , 2018, 67(24): 244202.doi:10.7498/aps.67.20181335
[8]	贾玥, 陈肖含, 张好, 张临杰, 肖连团, 贾锁堂.Rydberg原子的电磁诱导透明光谱的噪声转移特性. 必威体育下载 , 2018, 67(21): 213201.doi:10.7498/aps.67.20181168
[9]	赵军龙, 张译丹, 杨名.噪声对一种三粒子量子探针态的影响. 必威体育下载 , 2018, 67(14): 140302.doi:10.7498/aps.67.20180040
[10]	李诗宇, 田剑锋, 杨晨, 左冠华, 张玉驰, 张天才.探测器对量子增强马赫-曾德尔干涉仪相位测量灵敏度的影响. 必威体育下载 , 2018, 67(23): 234202.doi:10.7498/aps.67.20181193
[11]	王云新, 李虹历, 王大勇, 李静楠, 钟欣, 周涛, 杨登才, 戎路.基于双平行马赫-曾德尔调制器的大动态范围微波光子下变频方法. 必威体育下载 , 2017, 66(9): 098401.doi:10.7498/aps.66.098401
[12]	闫子华, 孙恒信, 蔡春晓, 马龙, 刘奎, 郜江瑞.基于低频压缩光的声频信号测量. 必威体育下载 , 2017, 66(11): 114205.doi:10.7498/aps.66.114205
[13]	孙新梅, 查新未, 祁建霞, 兰倩.基于非最大纠缠的五粒子Cluster态的高效量子态共享方案. 必威体育下载 , 2013, 62(23): 230302.doi:10.7498/aps.62.230302
[14]	靳爱军, 王泽锋, 侯静, 郭良, 姜宗福, 肖瑞.复自相干度度量超连续谱相干性. 必威体育下载 , 2012, 61(15): 154201.doi:10.7498/aps.61.154201
[15]	王昌辉, 赵国华, 常胜江.基于光子晶体马赫-曾德尔干涉仪的太赫兹开关及强度调制器. 必威体育下载 , 2012, 61(15): 157805.doi:10.7498/aps.61.157805
[16]	韩奎, 王子煜, 沈晓鹏, 吴琼华, 童星, 唐刚, 吴玉喜.基于光子晶体自准直和带隙效应的马赫-曾德尔干涉仪设计. 必威体育下载 , 2011, 60(4): 044212.doi:10.7498/aps.60.044212
[17]	刘玉玲, 满忠晓, 夏云杰.用非最大纠缠信道对任意二粒子纠缠态的量子秘密分享. 必威体育下载 , 2008, 57(5): 2680-2686.doi:10.7498/aps.57.2680
[18]	商娅娜, 王东, 闫智辉, 王文哲, 贾晓军, 彭堃墀.利用非平衡光纤Mach-Zehnder干涉仪探测频率非简并纠缠态光场. 必威体育下载 , 2008, 57(6): 3514-3518.doi:10.7498/aps.57.3514
[19]	汪大林, 孙军强, 王健.基于周期极化反转铌酸锂光波导高速非归零码到归零码的转换. 必威体育下载 , 2008, 57(1): 252-259.doi:10.7498/aps.57.252
[20]	王琛, 王伟, 孙今人, 方智恒, 吴江, 傅思祖, 马伟新, 顾援, 王世绩, 张国平, 郑无敌, 张覃鑫, 彭惠民, 邵平, 易葵, 林尊琪, 王占山, 王洪昌, 周斌, 陈玲燕.利用x射线激光干涉诊断等离子体电子密度. 必威体育下载 , 2005, 54(1): 202-205.doi:10.7498/aps.54.202

计量

文章访问数:7598
PDF下载量:178
被引次数:0

搜索

留言板