Authors: Suter, Dieter
Cheng, Hongwei
Zhou, Xianyi
Du, Jiangfeng
Title: Experimental realization of 1 --> 2 asymmetric phase-covariant quantum cloning
Language (ISO): en
Abstract: While exact cloning of an unknown quantum state is prohibited by the linearity of quantum mechanics, approximate cloning is possible and has been used, e.g., to derive limits on the security of quantum communication protocols. In the case of asymmetric cloning, the information from the input state is distributed asymmetrically between the different output states. Here, we consider asymmetric phase-covariant cloning, where the goal is to optimally transfer the phase information from a single input qubit to different output qubits. We construct an optimal quantum cloning machine for two qubits that does not require ancilla qubits and implement it on an NMR quantum information processor.
URI: http://hdl.handle.net/2003/25397
http://dx.doi.org/10.17877/DE290R-2681
Publishers Link: http://e3.physik.tu-dortmund.de/~suter/eprints/Asymmetric_Cloning.pdf
Issue Date: 2007-01-17
Rights: ©2007 The American Physical Society
Publisher: The American Physical Society
URL: http://dx.doi.org/10.1103/PhysRevA.75.012317
Citation: Chen, Hongwei; Zhou, Xianyi; Suter, Dieter; Du, Jiangfeng: Experimental realization of 1?2 asymmetric phase-covariant quantum cloning. In: Physical Review A Jg. 75(2007), 012317.
Appears in Collections:Suter, Dieter Prof. Dr.

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