Coupling Josephson qubits via a current-biased information bus
超导电性
2009-11-10 v2 量子物理
摘要
Josephson qubits without direct interaction can be effectively coupled by sequentially connecting them to an information bus: a current-biased large Josephson junction treated as an oscillator with adjustable frequency. The coupling between any qubit and the bus can be controlled by modulating the magnetic flux applied to that qubit. This tunable and selective coupling provides two-qubit entangled states for implementing elementary quantum logic operations, and for experimentally testing Bell's inequality.
关键词
引用
@article{arxiv.cond-mat/0402678,
title = {Coupling Josephson qubits via a current-biased information bus},
author = {L. F. Wei and Yu-xi Liu and Franco Nori},
journal= {arXiv preprint arXiv:cond-mat/0402678},
year = {2009}
}
备注
10 pages, 1 figure. submitted