Research ArticlesNo Access

SUPERPOSITIONS OF COHERENT STATES AND SQUEEZING EFFECTS IN A MESOSCOPIC JOSEPHSON JUNCTION

JIAN ZOU

Department of Applied Physics, Beijing Institute of Technology, Beijing 100081, P.R. China

Search for more papers by this author

and

BIN SHAO

Department of Applied Physics, Beijing Institute of Technology, Beijing 100081, P.R. China

Search for more papers by this author

https://doi.org/10.1142/S021797929900076XCited by:9 (Source: Crossref)

Abstract

We consider a mesoscopic Josephson junction in a circular superconducting ring which encloses a magneto static flux. It is shown that with the junction being initially prepared in its lowest energy level the state of the junction can evolve in a quantum superposition of two coherent states, and squeezing can exist in such system.

PACS: 74.50.+r, 42.50.Dv, 42.50.Fx