Driving Atoms Into Decoherence-Free States
Quantum Physics
2009-10-31 v2
Abstract
We describe the decoherence-free subspace of N atoms in a cavity, in which decoherence due to the leakage of photons through the cavity mirrors is suppressed. We show how the states of the subspace can be entangled with the help of weak laser pulses, using the high decay rate of the cavity field and strong coupling between the atoms and the resonator mode. The atoms remain decoherence-free with a probability which can, in principle, be arbitrarily close to unity.
Cite
@article{arxiv.quant-ph/9912004,
title = {Driving Atoms Into Decoherence-Free States},
author = {Almut Beige and Daniel Braun and Peter L. Knight},
journal= {arXiv preprint arXiv:quant-ph/9912004},
year = {2009}
}
Comments
12 pages, 3 figures, more detailed version, accepted for publication in New Journal of Physics, see http://www.njp.org/