Yu. M. Gal'perin, L. Y. Gorelik, N. I. Lundin, V. S. Shumeĭko, R. I. Shekhter, M. Jonson, “Quantum Andreev interferometer in an environment”, UFN, 2001, Volume 171, supplement № 10,Pages <nobr>121

Quantum computing

Quantum Andreev interferometer in an environment

Yu. M. Gal'perin^ab, L. Y. Gorelik^cd, N. I. Lundin^cd, V. S. Shumeĭko^dc, R. I. Shekhter^cd, M. Jonson^dc

^a A. F. Ioffe Institute of the Russian Academy of Sciences, 194021 St. Petersburg, Russian Federation
^b University of Oslo, P. O. Box 1048 Blindern, N-0316 Oslo Norway
^c Chalmers University of Technology, Department of Applied Physics, 412 96 Göteborg, Sweden
^d Göteborg University, 412 96 Göteborg, Sweden

Abstract: The influence of a noisy environment on coherent transport in Andreev states through a point contact between two superconductors is considered. The amount of dephasing is estimated for a microwave-activated quantum interferometer. Possibilities of experimentally investigating the coupling between a superconducting quantum point contact and its electromagnetic environment are discussed.

PACS: 71.10.+Pm, 73.22.Dj, 85.25.-j, 73.40.Gk

Language: English