Reversing operation with fidelity and purity gain for Schrödinger cat state
نویسندگان
چکیده
It is shown that a large class of weak disturbances on the Schrödinger cat state can be canceled by a reversing operation on the system. We illustrate this for spin systems undergoing an Ising-type interaction with the environment and demonstrate that both the fidelity to the original cat state and the purity of the amended state can simultaneously be increased by the reversing operation. A possible experimental scheme to implement our scheme is discussed. PACS: 03.67.-a, 03.67.Pp, 03.65.Ta
منابع مشابه
Probabilistic reversing operation with fidelity and purity gain for macroscopic quantum superposition
It is shown that a large class of weak disturbances on macroscopic quantum superpositions can be canceled by a probabilistic reversing operation on the system. We illustrate this for spin systems undergoing an Ising-type interaction with the environment and demonstrate that both the fidelity to the original state and the purity of the amended state can simultaneously be increased by the reversi...
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