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作者:Huangyun Rao
来源:[J].International Journal of Theoretical Physics(IF 1.086), 2020, Vol.59 (3), pp.125-133
摘要:Abstract(#br)In this paper, we investigate the improvement of quantum Fisher information (QFI) of a single-qubit system coupled to a common reservoir by homodyne-based feedback control. It is shown that by controlling the polar parameter of the initial quantum state, one may...
作者:Huangyun Rao , L. P. Guo
来源:[J].International Journal of Theoretical Physics(IF 1.086), 2014, Vol.53 (1), pp.146-158
摘要:Abstract(#br)A quantum entangling gate is investigated in dissipative system by considering input initial entangled two qubits. By analyzing the relation between the fidelity and the concurrence, we find that the fidelity of gate is strongly correlated to the entanglement of the ...

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