Direct Josephson coupling between superconducting flux qubits

Preprint

30 March 2005

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0501085

Abstract

We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.

Keywords

SUPERCONDUCTING FLUX
JOSEPHSON COUPLING
ANTIFERROMAGNETIC
DIRECT JOSEPHSON
FERROMAGNETIC
FLUX QUBITS
QUBITS

All Related Versions

Version 1, 2005-01-05, ArXiv
Version 2, 2005-03-30, ArXiv
Published version: Physical Review B, 72 (2), 020503.

This publication has 0 references indexed in Scilit: