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8 papers · 2 filters
Quantifying Spontaneously Symmetry Breaking of Quantum Many-body Systems
G. H. Dong, Y. N. Fang, C. P. Sun
Spontaneous symmetry breaking is related to the appearance of emergent phenomena, while a non-vanishing order parameter has been viewed as the sign of turning into such symmetry br…
Exact solution of the two-axis countertwisting Hamiltonian
Feng Pan, Yao-Zhong Zhang, Jerry P. Draayer
It is shown that the two-axis countertwisting Hamiltonian is exactly solvable when the quantum number of the total angular momentum of the system is an integer after the Jordan-Sch…
Spin-parity effect in violation of bell's inequalities for entangled states of parallel polarization
Haifeng Zhang, Jianhua Wang, Zhigang Song +2
Bell inequalities (BIs) derived in terms of quantum probability statistics are extended to general bipartite-entangled states of arbitrary spins with parallel polarization. The ori…
Hidden -algebraic structure in Rabi model and its 2-photon and two-mode generalizations
Yao-Zhong Zhang
It is shown that the (driven) quantum Rabi model and its 2-photon and 2-mode generalizations possess a hidden -algebraic structure which explains the origin of the quasi-exa…
Global estimates of errors in quantum computation by the Feynman-Vernon formalism
Erik Aurell
The operation of a quantum computer is considered as a general quantum operation on a mixed state on many qubits followed by a measurement. The general quantum operation is further…
Bell's Nonlocality Can be Detected by the Violation of Einstein-Podolsky-Rosen Steering Inequality
Jing-Ling Chen, Changliang Ren, Changbo Chen +2
Recently quantum nonlocality has been classified into three distinct types: quantum entanglement, Einstein-Podolsky-Rosen steering, and Bell's nonlocality. Among which, Bell's nonl…