| 基于弱非线性实现非破坏性测量两光子Bell态及三光子Greenberger-Horne-Zeilinger态 |
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| 引用本文： | 丁东,闫凤利.基于弱非线性实现非破坏性测量两光子Bell态及三光子Greenberger-Horne-Zeilinger态[J].物理学报,2013,62(10):100304-100304. |
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| 作者姓名： | 丁东 闫凤利 |
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| 作者单位： | 1. 华北科技学院基础部, 北京 101601;2. 河北师范大学物理科学与信息工程学院, 石家庄 050024 |
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| 摘 要： | 基于弱非线性及线性光学元件提出非破坏性测量两光子Bell态及三光子 Greenberger-Horne-Zeilinger (GHZ)态方案. 方案中, 首先应用光束分束器及交叉克尔非线性介质对两光子Bell态进行对称性分析, 进而结合控制非门提出三光子分析方案实现对八个三光子GHZ态完全且非破坏性区分.
关键词：
Bell态测量
Greenberger-Horne-Zeilinger态测量
弱非线性
量子非破坏性测量
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| 关 键 词： | Bell态测量 Greenberger-Horne-Zeilinger态测量 弱非线性 量子非破坏性测量 |
| 收稿时间： | 2012-11-27 |
Quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger-state based on weak nonlinearities |
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| Ding Dong,Yan Feng-Li.Quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger-state based on weak nonlinearities[J].Acta Physica Sinica,2013,62(10):100304-100304. |
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| Authors: | Ding Dong Yan Feng-Li |
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| Abstract: | The scheme for quantum nondemolition measurement of two-photon Bell-state and three-photon Greenberger-Horne-Zeilinger (GHZ)-state is proposed based on weak nonlinearities and linear-optics elements. We first describe a scheme of the symmetry analyzer for two-photon Bell-state by using beam splitters and cross-Kerr nonlinear medium. According to this symmetry analyzer for two-photon Bell-state and the controlled-NOT gates we construct a three-photon state analyzer which can completely and nondestructively discriminate eight three-photon GHZ states.
Keywords：
Bell-state detection
Greenberger-Horne-Zeilinger-state detection
weak nonlinearity
quantum nondemolition detection |
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| Keywords: | Bell-state detection Greenberger-Horne-Zeilinger-state detection weak nonlinearity quantum nonde-molition detection |
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