Possible realization of Josephson charge qubits in two coupled Bose-Einstein condensates

Preprint

16 January 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0107368

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

JOSEPHSON CHARGE QUBITS
QUBIT WITH TWO
BOSE EINSTEIN
COUPLED BOSE
QUBITS

All Related Versions

Version 1, 2001-07-17, ArXiv
Version 2, 2002-01-16, ArXiv
Published version: Physical Review A, 65 (2), 022318.

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