Realization of Optimal Universal and Phase-Covariant Quantum Machines via Input-Output Cavities

被引：0
|
作者：
王从戎 [1 ]
李大创 [1 ,2 ]
张凤元 [1 ]
许瑞敏 [1 ]
机构：
[1] School of Electronics and Information Engineering, Hefei Normal University
[2] Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of
来源：
Chinese Physics Letters | 2013年 / 30卷 / 03期
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D O I：
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中图分类号：
O413 [量子论];
学科分类号：
摘要：
We present a scheme to realize a special quantum cloning machine via input-output cavities.The cloning machine can copy information from one atom to another distant atom.Choosing different parameters,the method can perform optimal symmetric(asymmetric) universal quantum cloning and optimal symmetric(asymmetric) phasecovariant cloning.Compared to previous schemes,our scheme is more insensitive to actual environmental noise and can get higher fidelity in a current cavity quantum electrodynamics system with an entangled state acting as a quantum channeJ than a single-photon pulse.
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页码：13 / 17
页数：5
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