Effects of Phase Damping on Controlled Teleportation of a Qubit by a GHZ State
Effects of Phase Damping on Controlled Teleportation of a Qubit by a GHZ State
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相位阻尼对 GHZ 态受控量子位隐形传态的影响
DOI:
10.1088/0253-6102/49/4/19
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发表时间:
2008-04
影响因子:
3.1
通讯作者:
中科院分区:
文献类型:
--
作者:
We investigate controlled teleportation of a qubit via a GHZ state with the influence of phase damping in the Bloch sphere representation. We use the average trace distance to describe how close the output state is to the input state to be teleported. Our results show that the average trace distance is a function of decoherence rates and angles of the analyzer performed by the controller in the single-particle projective measurement. Moreover, for a fixed value of the decoherence rate, one can adjust the analyzer angle to achieve the optimal average trace distance.
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