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Quantum Information Processing

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01-06-2013

Preparation of three-qubit decoherence-free state via quantum Zeno dynamics

Authors: Qi-Cheng Wu, Yuan Wang, Xin Ji

Published in: Quantum Information Processing | Issue 6/2013

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Abstract

We propose two schemes to generate three-qubit decoherence-free state for atoms trapped in a cavity via quantum Zeno dynamics. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity of the entangled state is investigated. Numerical results show that the schemes are robust against the cavity decay since the evolution of the system is restricted to a subspace with null-excitation cavity fields. Moreover, no measurement, post selection and auxiliary bits are needed during the whole process.

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Title: Preparation of three-qubit decoherence-free state via quantum Zeno dynamics
Authors: Qi-Cheng Wu
Yuan Wang
Xin Ji
Publication date: 01-06-2013
Publisher: Springer US
Published in: Quantum Information Processing / Issue 6/2013
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-012-0513-5

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