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Testing a state preparation and read-out protocol for the vortex qubit

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

A double-well potential for a Josephson vortex can be formed by applying an external magnetic field in the plane of a heart-shaped long Josephson junction. At low enough temperatures, such a system is expected to behave as a quantum two-state system and hence is a candidate for a qubit. We have designed a model system of such a vortex qubit and experimentally demonstrate here a protocol for the preparation and read-out of its states in the classical regime. The measurement results agree well with the theoretical analysis of the vortex dynamics.

DOI: 10.1016/S0921-4534(01)01190-X
Zitationen: 10
Web of Science
Zitationen: 13
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2002
Sprache Englisch
Identifikator ISSN: 0921-4534, 1873-2143
KITopen-ID: 1000074333
Erschienen in Physica / C
Band 368
Heft 1-4
Seiten 324-327
Nachgewiesen in Web of Science
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