https://doi.org/10.1140/epjd/e2004-00027-1
Quantum-information processing in strong-excitation regime with trapped ions in microcavity
Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P.R. China
and School of Theoretical Physics and Department of Applied Physics, Hunan University, Changsha, 410082, P.R. China
Corresponding author: a mfeng@thphys.may.ie
Received:
25
June
2003
Revised:
22
December
2003
Published online:
2
March
2004
A quantum information processing scheme is proposed in a system with cold trapped ions embedded in a single mode microcavity in strong excitation regime. With suitable choice of frequencies of the laser and the cavity light as well as ion-laser coupling strength, multipartite entanglement would be generated among internal states of the ions, which is insensitive to decoherence due to the cavity decay and heating of the vibrational mode of the ions. As a practical example, the specific discussion is focused on the two-ion case. Some unique features of the Bell states are presented under the framework of our model, which would be useful for quantum information processing.
PACS: 03.67.-a – Quantum information / 32.80.Lg – Mechanical effects of light on atoms, molecules, and ions / 42.50.-p – Quantum optics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
