Quantum entanglement in dense multiqubit systems
Quantum Physics
2015-05-14 v1
Abstract
The pairwise entanglement of an arbitrary atomic pair randomly extracted from a laser-driven dense multiqubit sample in the presence of quantum dissipation due to spontaneous emission is considered. The dipole-dipole interaction between the particles shifts the laser-qubit resonance frequency and consequently modifies the quantum entanglement. By means of an appropriate tuning of the laser frequency, one can optimize the entanglement in this system. For large ensembles, the maximum entanglement occurs near the laser parameters where the steady-state sample exhibits phase transition phenomena.
Cite
@article{arxiv.0911.1223,
title = {Quantum entanglement in dense multiqubit systems},
author = {M. Macovei and J. Evers and C. H. Keitel},
journal= {arXiv preprint arXiv:0911.1223},
year = {2015}
}
Comments
6 pages, 6 figures