92 citations · 169 across the 5 of their papers we have counts for
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quant-ph2014
Decoherence of a quantum system coupled to an XY spin chain: Role of the initial state of the spin chain
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
We study the decoherence of a coupled quantum system consisting of a central spin and its correlated environment described by a general spin-chain model. We make it clear that…
quant-ph2007★ 77 cited
Disentanglement of two qubits coupled to an XY spin chain: Role of quantum phase transition
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
We study the disentanglement of two spin qubits which interact with a general XY spin-chain environment. The dynamical process of the disentanglement is numerically and analyticall…
quant-ph2006★ 92 cited
Loschmidt Echo and Berry phase of the quantum system coupled to the XY spin chain: Proximity to quantum phase transition
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
We study the Loschmidt echo (LE) of a coupled system consisting of a central spin and its surrounding environment described by a general XY spin-chain model. The quantum dynamics o…