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Josephson Vortex Qubit : Design, Preparation and Read-Out

Kemp, Andreas; Wallraff, Andreas; Ustinov, Alexey V.

The design of a qubit based on a single Josephson vortex trapped in a shaped long Josephson junction is discussed in detail. The vortex potential is formed due to its interaction with an in-plane magnetic field and a bias current applied to the junction. The profile of the potential is calculated using a standard perturbation approach. We examine the dependence of the potential properties on the junction shape and its electrical parameters and discuss the requirements for observing quantum effects in this system. We have developed and experimentally tested methods for the preparation and read-out of vortex states of this qubit in the classical regime.

DOI: 10.1002/1521-3951(200210)233:3<472::AID-PSSB472>3.0.CO;2-J
Zitationen: 35
Web of Science
Zitationen: 39
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2002
Sprache Englisch
Identifikator ISSN: 0370-1972, 1521-3951
KITopen-ID: 1000074320
Erschienen in Physica status solidi / B
Band 233
Heft 3
Seiten 472-481
Nachgewiesen in Scopus
Web of Science
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