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This paper studies the average fidelity of teleportation and thermal entanglement for a two-qubit Heisenberg XYZ chain in the presence of both an inhomogeneous magnetic field and a Dzyaloshinski--Moriya interaction. It shows that for a fixed Dz, the increase of bz will broaden the critical temperature at the cost of decreasing the thermal entanglement. And it can modulate the inhomogeneous magnetic field and the Dzyaloshinski--Moriya interaction for the average fidelity of teleportation to be optimal. 相似文献
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玉米是平罗县的主要粮食作物之一,近年来随着市场需求的变化,平罗县玉米播种面积已突破30万亩,总产已占全县粮食总产的50%以上。进一步稳定和增加玉米产量,促进流通和转化增值,对于农业增效、农民增收具有十分重要的意义。 相似文献
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