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Dynamics of a Raman coupled model: entanglement and quantum computation

journal contribution
posted on 2023-06-08, 00:54 authored by J Larson, Barry M. GarrawayBarry M. Garraway
The evolution of a Raman coupled three-level N-atom with two quantized cavity modes is studied in the large detuning case; i.e. when the upper atomic level can be adiabatically eliminated. Particularly the situation when the two modes are prepared in initial coherent or squeezed states, with a large average number of photons, is investigated. It is found that the atom, after specific interaction times, disentangles from the two modes, leaving them, in certain cases, in entangled SchrC6dinger cat states. These disentanglement times can be controlled by adjusting the ratio between average numbers of photons in the two modes. It is also shown how this effective model may be used for implementing quantum information processing. Especially it is demonstrated how to generate various entangled states, such as EPR and GHZ states, and quantum logic operations, such as the control-not and the phase gate.

History

Publication status

  • Published

Journal

Journal of Modern Optics

ISSN

0950-0340

Publisher

Taylor & Francis

Issue

11

Volume

51

Page range

1691-1704

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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