Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks
Optimal verification of the Bell state and Greenberger–Horne–Zeilinger states in untrusted quantum networks
复制标题
不可信量子网络中贝尔态和格林伯格-霍恩-蔡林格态的最优验证
DOI:
10.1038/s41534-021-00499-8
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发表时间:
2021-11
影响因子:
7.6
通讯作者:
Huangjun Zhu
中科院分区:
文献类型:
--
作者:
Yun-Guang Han;Zihao Li;Yukun Wang;Huangjun Zhu
Bipartite and multipartite entangled states are basic ingredients for constructing quantum networks and their accurate verification is crucial to the functioning of the networks, especially for untrusted networks. Here we propose a simple approach for verifying the Bell state in an untrusted network in which one party is not honest. Only local projective measurements are required for the honest party. It turns out each verification protocol is tied to a probability distribution on the Bloch sphere and its performance has an intuitive geometric meaning. This geometric picture enables us to construct the optimal and simplest verification protocols, which are also very useful to detecting entanglement in the untrusted network. Moreover, we show that our verification protocols can achieve almost the same sample efficiencies as protocols tailored to standard quantum state verification. Furthermore, we establish an intimate connection between the verification of Greenberger–Horne–Zeilinger states and the verification of the Bell state. By virtue of this connection we construct the optimal protocol for verifying Greenberger–Horne–Zeilinger states and for detecting genuine multipartite entanglement.
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影响因子:
8.6
作者:
He Lu;Chien-Ying Huang;Zheng-Da Li;Xu-Fei Yin;Rui Zhang;Teh-Lu Liao;Yu-Ao Chen;Che-Ming Li;Jian-Wei Pan
通讯作者:
Jian-Wei Pan
DOI:
10.3390/cryptography4010003
发表时间:
2018-01
期刊:
Cryptogr.
影响因子:
--
作者:
D. Markham;Alexandra Krause
通讯作者:
D. Markham;Alexandra Krause
DOI:
10.1117/12.483026
发表时间:
2002-09
期刊:
--
影响因子:
--
作者:
G. Guo;Guangcan Guo
通讯作者:
G. Guo;Guangcan Guo
影响因子:
16.6
作者:
McCutcheon, W.;Pappa, A.;Bell, B. A.;McMillan, A.;Chailloux, A.;Lawson, T.;Mafu, M.;Markham, D.;Diamanti, E.;Kerenidis, I.;Rarity, J. G.;Tame, M. S.
通讯作者:
Tame, M. S.
DOI:
10.1088/0305-4470/39/46/013
发表时间:
2005-04
期刊:
Journal of Physics A
影响因子:
--
作者:
Masahito Hayashi;Keiji Matsumoto;Y. Tsuda
通讯作者:
Masahito Hayashi;Keiji Matsumoto;Y. Tsuda