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Quantum Information Processing

Robust atomic entanglement in two coupled cavities via virtual excitations and quantum Zeno dynamics

Rong‐Can Yang, Gang Li, Tiancai Zhang

Published Mar 24, 2012• 10 citations
Publisher
DOI
10.1007/s11128-012-0393-8

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A scheme is proposed for the generation of a three-dimensional entangled state for two atoms trapped in a cavity via quantum Zeno dynamics. Because the scheme is based on the resonant interaction, the time required to produce entanglement is very short compared with the dispersive protocols. We show that the resulting effective dynamics allows for the creation of robust qutrit-qutrit entanglement. 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 scheme is robust against the cavity decay since the evolution of the system is restricted to a subspace with null-excitation cavity fields. Furthermore, the present scheme has been generalized to realize NNN-dimensional entanglement for two atoms.