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4 papers · 2 filters
Violation of Bell inequality in perfect translation invariant systems
Zhao-Yu Sun, Yu-Ying Wu, Hai-Lin Huang +2
Bell inequalities and nonlocality have been widely studied in one-dimensional quantum systems. As a kind of quantum correlation, it is expected that bipartite nonlocaity should be…
Bell inequality and nonlocality in a two-dimensional mixed spin systems
Z. Y. Sun, Y. Y. Wu, H. L. Huang +1
In this paper, we use Bell inequality and nonlocality to study the bipartite correlation in an exactly soluble two-dimensional mixed spin system. Bell inequality turns out to be a…
Odd-even effect of quantum discord and quantum phase transitions in the S=1/2 spin ladder with ring exchange
H. L. Huang, Z. Y. Sun, B. Wang
The singularity of quantum correlations, such as quantum entanglement(QE) and quantum discord(QD), has been widely regarded as a valuable indicator for quantum phase transition(QPT…
Bell-CHSH function approach to quantum phase transitions in matrix product systems
Zhao-Yu Sun, Hai-Lin Huang, Bo Wang
Recently, nonlocality and Bell inequalities have been used to investigate quantum phase transitions (QPTs) in low-dimensional quantum systems. Nonlocality can be detected by the Be…