Volume 82, Number 1, April 2008
|Number of page(s)||5|
|Published online||14 March 2007|
Generation of symmetric Dicke states of many atomic qubits by adiabatic passage
Center for Modern Physics and Department of Physics, Chongqing University - Chongqing 400044, China
2 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences - Wuhan 430071, China
Accepted: 11 February 2008
We investigate how to deterministically generate symmetric Dicke states of many atomic qubits in a high-Q two-mode optical cavity via dark-state evolution. Our scheme is based on adiabatic evolution, which makes the relevant dynamics insensitive to randomness of the moderate fluctuations of experimental parameters. Assisted by the postselective process, our scheme could be of the fidelity of unity, and robust to imperfect factors such as dissipation, mismatch of cavity parameters, photon loss, and detector inefficiency.
PACS: 03.67.Bg – Entanglement production and manipulation / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 42.50.Dv – Quantum state engineering and measurements
© EPLA, 2008
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