Ultrafast deterministic generation of entanglement in a time-dependent asymmetric two-qubit-cavity system
Quantum Physics
2009-11-10 v1
Abstract
We present an efficient scheme for the controlled generation of pure two-qubit states possessing {\em any} desired degree of entanglement and a {\em prescribed} symmetry in two cavity QED based systems, namely, cold trapped ions and flying atoms. This is achieved via on-resonance ion/atom-cavity couplings which are time-dependent and asymmetric, leading to a trapping vacuum state condition which does not arise for identical couplings. A duality in the role of the coupling ratio yields states with a given concurrence but opposing symmetries. The experimental feasibility of the proposed scheme is also discussed.
Cite
@article{arxiv.quant-ph/0311111,
title = {Ultrafast deterministic generation of entanglement in a time-dependent asymmetric two-qubit-cavity system},
author = {Alexandra Olaya-Castro and Neil F. Johnson and Luis Quiroga},
journal= {arXiv preprint arXiv:quant-ph/0311111},
year = {2009}
}
Comments
4 pages, 4 figures