Switchable coupling between charge and flux qubits
超导电性
2009-11-13 v2 介观与纳米尺度物理
量子物理
摘要
We propose a hybrid quantum circuit with both charge and flux qubits connected to a large Josephson junction that gives rise to an effective inter-qubit coupling controlled by the external magnetic flux. This switchable inter-qubit coupling can be used to transfer back and forth an arbitrary superposition state between the charge qubit and the flux qubit working at the optimal point. The proposed hybrid circuit provides a promising quantum memory because the flux qubit at the optimal point can store the tranferred quantum state for a relatively long time.
引用
@article{arxiv.cond-mat/0703012,
title = {Switchable coupling between charge and flux qubits},
author = {Xiao-Ling He and J. Q. You and Yu-xi Liu and L. F. Wei and Franco Nori},
journal= {arXiv preprint arXiv:cond-mat/0703012},
year = {2009}
}
备注
5 pages, 1 figure