Possible realization of Josephson charge qubits in two coupled Bose-Einstein condensates
Soft Condensed Matter
2009-11-07 v2 Mesoscale and Nanoscale Physics
Quantum Physics
Abstract
We demonstrate that two coupled Bose-Einstein condensates (BEC) at zero temperature can be used to realize a qubit which is the counterpart of Josephson charge qubits. The two BEC are weakly coupled and confined in an asymmetric double-well trap. When the "charging energy" of the system is much larger than the Josephson energy and the system is biased near a degeneracy point, the two BEC represent a qubit with two states differing only by one atom. The realization of the BEC qubits in realistic BEC experiments is briefly discussed.
Keywords
Cite
@article{arxiv.cond-mat/0107368,
title = {Possible realization of Josephson charge qubits in two coupled Bose-Einstein condensates},
author = {Zeng-Bing Chen and Yong-De Zhang},
journal= {arXiv preprint arXiv:cond-mat/0107368},
year = {2009}
}
Comments
4 pages; comments are welcome / Corrected typos in Eq. (16); a note added