https://doi.org/10.1140/epjd/e2008-00095-1
Generation of field cluster states through collective operation of cavity QED disentanglement eraser
1
Department of Electronics, Quaid-i-Azam University, Islamabad, Pakistan
2
Photonics Division, National Institute of Lasers and Optronics, PINSTECH, Nilore, Islamabad, Pakistan
3
Centre for Quantum Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan
4
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Korea
Corresponding author: a ashfaq_khosa@yahoo.com
Received:
2
January
2008
Published online:
7
May
2008
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.
PACS: 03.67.-a – Quantum information / 03.67.Mn – Entanglement production, characterization, and manipulation / 42.50.Pq – Cavity quantum electrodynamics; micromasers
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008
