Influence of Noises on Remote State Preparation Using GHZ State |
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Authors: | LIANG Hua-Qiu LIU Jin-Ming |
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Institution: | 1. State Key Laboratory of Precision Spectroscopy,
Department of Physics, East China Normal University, Shanghai 200062, China
;2. Department of Physics, Taizhou University, Linhai 317000, China |
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Abstract: | Using a quantum channel consisting
of a GHZ state exposed to noisy environment, we investigate how to
remotely prepare an entangled state and a qubit state, respectively.
By solving the master equation in the Lindblad form, the influence
of the various types of noises on the GHZ state is first discussed.
Then we use the fidelity to describe how close the remotely prepared
state and the initial state are. Our results show that the fidelity
is a function of the decoherence rates and the angles of the initial
state. It is found that for each of the two RSP schemes, the influence of the noise acting simultaneously in x, y, and z directions on the average fidelity is the strongest while the influence of the noise acting in x or z direction on the average fidelity is
relatively weaker. |
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Keywords: | remote state preparation fidelity GHZ state noisy environment |
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