| 两比特“X”态的量子非局域关联检验 |
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| 引用本文： | 刘晋,缪波,胡强,樊代和.两比特“X”态的量子非局域关联检验[J].量子光学学报,2020,26(1):1-6. |
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| 作者姓名： | 刘晋 缪波 胡强 樊代和 |
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| 作者单位： | 西南交通大学物理科学与技术学院,成都610031 |
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| 基金项目： | 国防科技重点实验室项目 |
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| 摘 要： | 基于Hardy定理,本文针对两比特"X"态这种混合态,进行了量子非局域关联检验研究。首先,简要阐述了针对任意量子态的Hardy定理检验逻辑,并给出了进行量子非局域关联的检验方法。进一步,本文以一种特定的"X"态为例(r=0.47),分析了保真度对"X"态量子非局域关联检验的影响,结果表明,只要该"X"态和量子纯态的保真度F≥0.885时,便能成功地检验量子非局域关联,且随着F的增加,成功检验的程度也将增加。最后,本文还给出了针对任意"X"态(即0
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| 关 键 词： | “X”态 量子非局域关联 Hardy定理 保真度 |
Testing Quantum Nonlocality with Two Qubit X Sstates |
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| LIU Jin,MIU Bo,HU Qiang,FAN Dai-he.Testing Quantum Nonlocality with Two Qubit X Sstates[J].Acta Sinica Quantum Optica,2020,26(1):1-6. |
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| Authors: | LIU Jin MIU Bo HU Qiang FAN Dai-he |
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| Institution: | (School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Based on the Hardy’s theorem,this paper tested the quantum nonlocality by using the two qubit "X" states.Firstly,we introduced the general logic of Hardy’s theorem briefly.Then the testing methods were given.Furthermore,the effect of fidelity on the quantum nonlocality testing of quantum "X" state was investigated based on a special quantum state(i.e.r=0.47).The results showed that the quantum state can be used to test the quantum nonlocality successfully when F≥0.885.And the detection alluracy increased with the increasing of F.Finally,the condition for a successful testing of quantum nonlocality by using an arbitrary "X" state(i.e.0
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| Keywords: | X states quantum nonlocality Hardy’s theorem fidelity |
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