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- Chinese Academy of SciencesCN134 papers
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- Collaborative Innovation Center of Quantum MatterCN36 papers
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4 papers · 2 filters
Phase diagram of quantum critical system via local convertibility of ground state
Si-Yuan Liu, Quan Quan, Jin-Jun Chen +3
We investigate the relationship between two kinds of ground-state local convertibility and quantum phase transitions in XY model. The local operations and classical communications…
Ultra-small phase estimation via weak measurement technique with postselection
Chen Fang, Jing-Zheng Huang, Yang Yu +2
Weak measurement is a novel technique for parameter estimation with higher precision. In this paper we develop a general theory for the parameter estimation based on weak measureme…
Majorization relation in quantum critical systems
Lin-Ping Huai, Yu-Ran Zhang, Si-Yuan Liu +3
The most basic local conversion is local operations and classical communications (LOCC), which is also the most natural restriction in quantum information processing. We investigat…
Two-copy Quantum Teleportation
Quan Quan, Ming-Jing Zhao, Shao-Ming Fei +3
We investigate two-copy scenario of quantum teleportation based on Bell measurements. The detailed protocol is presented and the general expression of the corresponding optimal tel…