Direct counterfactual communication via quantum Zeno effect

被引:73
作者
Cao, Yuan [1 ,2 ,3 ]
Li, Yu-Huai [1 ,2 ,3 ]
Cao, Zhu [4 ]
Yin, Juan [1 ,2 ,3 ]
Chen, Yu-Ao [1 ,2 ,3 ]
Yin, Hua-Lei [1 ,2 ,3 ]
Chen, Teng-Yun [1 ,2 ,3 ]
Ma, Xiongfeng [4 ]
Peng, Cheng-Zhi [1 ,2 ,3 ]
Pan, Jian-Wei [1 ,2 ,3 ]
机构
[1] Univ Sci & Technol China, Shanghai Branch, Natl Lab Phys Sci Microscale, Shanghai 201315, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Shanghai 201315, Peoples R China
[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 201315, Anhui, Peoples R China
[4] Tsinghua Univ, Inst Interdisciplinary Informat Sci, Ctr Quantum Informat, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
quantum Zeno effect; counterfactual communication; heralded single photon source; quantum optics; quantum imaging; PARADOX; INTERROGATION; CRYPTOGRAPHY; REALIZATION;
D O I
10.1073/pnas.1614560114
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Intuition from our everyday lives gives rise to the belief that information exchanged between remote parties is carried by physical particles. Surprisingly, in a recent theoretical study [Salih H, Li ZH, Al-Amri M, Zubairy MS (2013) Phys Rev Lett 110: 170502], quantum mechanics was found to allow for communication, even without the actual transmission of physical particles. From the viewpoint of communication, this mystery stems from a (nonintuitive) fundamental concept in quantum mechanics-wave-particle duality. All particles can be described fully by wave functions. To determine whether light appears in a channel, one refers to the amplitude of its wave function. However, in counterfactual communication, information is carried by the phase part of the wave function. Using a single-photon source, we experimentally demonstrate the counterfactual communication and successfully transfer a monochrome bitmap from one location to another by using a nested version of the quantum Zeno effect.
引用
收藏
页码:4920 / 4924
页数:5
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