Article

Generation of field cluster states through collective operation of cavity QED disentanglement eraser

National Institute of Lasers and Optronics Photonics Division PINSTECH, Nilore Islamabad Pakistan; Korea Advanced Institute of Science and Technology Department of Physics Daejeon 305-701 Korea
The European Physical Journal D (Impact Factor: 1.51). 01/2008; 48(2):271-277. DOI: 10.1140/epjd/e2008-00095-1

ABSTRACT We investigate effects of a collective disentanglement eraser performed over
states of two pairs of pre-entangled cavities tagged independently with two
identical three-level atoms. It is shown that the collective disentanglement
operation ensures not only the recovery of initial coherence but also its
extension from the initial two to four qubits, generating four-qubit field
cluster states. We also propose a cavity QED scheme to generate an arbitrary
field graph state by means of a collective operation of disentanglement erasers.

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