The size effect of the quantum coherence in the transverse-field XY chain

2016 ◽  
Vol 503 ◽  
pp. 121-125 ◽  
Author(s):  
Lu Wang ◽  
Cui-hong Yang ◽  
Jun-feng Wang ◽  
Shu-guo Lei
Keyword(s):  
Size Effect ◽  
Quantum Coherence ◽  
Transverse Field ◽  
Xy Chain

scholarly journals One-way quantum deficit and quantum coherence in the anisotropic XY chain

2017 ◽  
Vol 60 (3) ◽  
Author(s):  
Biao-Liang Ye ◽  
Bo Li ◽  
Li-Jun Zhao ◽  
Hai-Jun Zhang ◽  
Shao-Ming Fei
Keyword(s):  
Quantum Coherence ◽  
Xy Chain

Quantum phase transition for the XY chain with Dzyaloshinsky–Moriya interaction

2018 ◽  
Vol 16 (06) ◽  
pp. 1850051 ◽  
Author(s):  
Biao-Liang Ye ◽  
Yan Luo ◽  
Shu-Yuan Jiang ◽  
Dan Zhang ◽  
Jian-Qin Xu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Quantum Coherence ◽  
Coupling Parameter ◽  
Spin Model ◽  
Quantum Phase ◽  
Spin Models ◽  
Two Measures ◽  
Xy Chain ◽  
Moriya Interaction

We study quantum phase transition of the [Formula: see text] spin model with Dzyaloshinsky–Moriya interaction, by using quantum correlation measures, i.e. quantum deficit and measurement-induced disturbance. It is shown that as the Dzyaloshinsky–Moriya coupling parameter [Formula: see text] increases, the behaviors of quantum phase transition can be suppressed. We also investigate quantum phase transition for the Ising and [Formula: see text] spin models at finite temperature. It is found that quantum phase transition characterized by measurement-induced disturbance is greater than or equal to that characterized by quantum deficit. Other interesting analytical results and numerical results on quantum phase transition for the proposed spin models are also presented by applying the two measures. Furthermore, we also compare quantum deficit and measurement-induced disturbance with quantum entanglement, quantum discord and quantum coherence.

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