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quant-ph2005
Decay of Loschmidt Echo Enhanced by Quantum Criticality
H. T. Quan, Z. Song, X. F. Liu +2
We study the transition of a quantum system from a pure state to a mixed one, which is induced by the quantum criticality of the surrounding system coupled to it. To chara…
quant-ph2002
Quasi-spin wave quantum memories with dynamic symmetry
C. P. Sun, Y. Li, X. F. Liu
For the two-mode exciton system formed by the quasi-spin wave collective excitation of many atoms fixed at the lattice sites of a crystal, we discover a dynamic symmetry depict…