Teleportation via a two-qubit Heisenberg XYZ model in the presence of phase decoherence
Teleportation via a two-qubit Heisenberg XYZ model in the presence of phase decoherence
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在存在相位退相干的情况下通过两个量子位海森堡 XYZ 模型进行隐形传输
DOI:
10.1016/j.physa.2008.03.036
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发表时间:
2008-07
影响因子:
3.3
通讯作者:
中科院分区:
文献类型:
--
作者:
We investigate quantum teleportation using the entangled channel consisting of a two-qubit Heisenberg XYZ model with a nonuniform magnetic field in the presence of phase decoherence. It is shown that the initial state of the channel plays an important role in the fully entangled fraction and the average fidelity of teleportation. The distinct feature of our teleportation scheme is that when the initial system is in the state |Ψ〉=m2|01〉+n2|10〉, the corresponding average fidelity is always larger than 2/3 even if there exist phase decoherence effects. Moreover, under certain circumstance, the average teleportation fidelity can be optimized by adjusting the magnitude of the nonuniform magnetic field.
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DOI:
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期刊:
Physical review. A, Atomic, molecular, and optical physics
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