Double-well potential for a Josephson vortex qubit

✍ Scribed by P.D. Shaju; V.C. Kuriakose

• Book ID: 103889319
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 187 KB
• Volume: 424
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2005.05.003

✦ Synopsis

The prospect of designing a vortex qubit is analyzed theoretically by studying the classical dynamics of a vortex in a double-well potential created in a semiannular Josephson junction. A vortex in a double-well potential behaves like a particle in a two-level system and can be a candidate for a qubit. Tunability of the double-well potential inside a semiannular Josephson junction allows the manipulation of the vortex states. Methods of vortex manipulation and read-out of the classical states of a qubit are also discussed.