Experimental verification of trade-off relation for coherence and disturbance

被引:2
作者
Gao, Huixia [1 ]
Xiao, Lei [1 ]
Wang, Kunkun [1 ,2 ]
Qu, Dengke [1 ,3 ]
Lin, Quan [1 ]
Xue, Peng [1 ]
机构
[1] Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China
[2] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China
[3] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China
来源
NEW JOURNAL OF PHYSICS | 2022年 / 24卷 / 07期
基金
中国国家自然科学基金;
关键词
trade-off relation; coherence; disturbance; UNCERTAINTY RELATIONS; QUANTUM; INFORMATION; DECOHERENCE;
D O I
10.1088/1367-2630/ac7c2c
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
When a quantum system is sent through a noisy channel, it is usually disturbed. At the same time, the system undergoes decoherence and tends to lose some delicate quantum features. For a particular basis, the coherence of the state changes. Otherwise, if the system is not disturbed, its state might retain all of coherence. As quantum noisy channels lead to both disturbance and decoherence, it is natural to ask about the relation between disturbance and decoherence. Recently, a trade-off relation for coherence and disturbance has been presented by Sharma and Pati (2018 Phys. Rev. A 97 062308). In this paper, with entangled photon pairs and linear optics, we experimentally verify this trade-off relation for a single-qubit system undergoing various noisy channels. Our experimental results agree with the theoretical predictions and provide a quantitative understanding of the relation between quantum channels and resources.
引用
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页数:8
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