Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Physics Letters

Periodic Revivals of Squeezing in a Mesoscopic Josephson Junction

Jian Zou, Bin Shao

Published Jun 1, 1999• 2 citations
Publisher

Abstract

The interaction between a mesoscopic Josephson junction and a quantized electromagnetic field is discussed quantum mechanically. Within the external field approximation, it is shown that if the field is prepared in a coherent state and the junction is initially in its lowest energy level, squeezing can occur in such a system.
DOI
10.1088/0256-307x/16/6/022

Related papers

Quantum Fluctuation Properties in Mesoscopic Josephson Junction

Zou Jian

An effective bosonic Hamiltonian describing the interaction of a mesoscopic Josephson junction with a quantized radiation field is studied. It is shown that when the field is initially in a coherent state and the junction initially in its lowest energy level state, the state of the coupled field-mesoscopic Josephson junction system can evolve to a squeezed state. A detailed analysis about the quantum fluctuation of the coupled system is given.

北京理工大学学报:英文版•Jan 1, 2002•0 citations

Squeezing Properties in Mesoscopic Josephson Junction with Nonclassical Radiation Field

Shao Bin, Zou Jian, Qian‐Shu Li

We consider a system of mesoscopic Josephson junction interacting with nonclassical radiation field and investigate any order squeezing for the mesoscopic Josephson junction subsystem. Our results show that if the field is initially prepared in a squeezed vacuum and the junction is in its lowest energy state (the vacuum state), then as the time evolves the Josephson junction subsystem can exhibit any order squeezing.

Modern Physics Letters B•Jul 10, 1998•7 citations

Collapse and Revival of Supercurrent in Mesoscopic Josephson Junctions in the Presence of Nonclassical Electromagnetic Field

Shao Bin, Zou Jian, Xing Xiu-San

Dynamic behavior of the supercurrent in a mesoscopic Josephson junction in the presence of a nonclassical electromagnetic field is investigated. It is shown that for the squeezed state the time evolution of the supercurrent can exhibit quantum collapse and revival phenomenon, while for the coherent state the phenomenon does not occur.

Chinese Physics Letters•Dec 1, 1997•5 citations

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

Jian Zou, Bin Shao

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.

International Journal of Modern Physics B•Mar 30, 1999•10 citations

Interaction of Mesoscopic Josephson Junctions and Three-mode Squeezed Eletromagnetic Field

Lili Zhang

Time evolution of the supercurrent in mesoscopic Josephson junctions has been studied when junctions interacted with three-mode squeezed electromagnetic field(defined by C.F.Lo in Phys.Rev.A V47 733-735,when generalized multimode squeezed states at).The relation between quantum collapse and revival phenomenon in time evolution of the supercurrent and squeezing parameter with different mode-and-mode parameters of the three-mode quantized electromagnetic field is showed.

Journal of Jingmen Technical College•Jan 1, 2007•0 citations

Continuous–Variable Entanglement in a Coupled Field–Mesoscopic Josephson Junction System

Tian-Hai Zeng, Shao Bin, Chang Ping +1 more

Continuous–variable entanglement in the interacting system of a mesoscopic Josephson junction with a squeezed field is investigated. It is shown that when the cavity field is initially prepared in a squeezed vacuum state and the junction in its lowest energy state, the coupling system can evolve into a two-mode Gaussian state. The time-dependent characteristic function in the Wigner representation for the system is analytically obtained, and the squeezing degree of the initial cavity field turns out to have not only an apparent enhancing but also a weakening effect on the entanglement of the coupling system under suitable parameter conditions.

Chinese Physics Letters•Sep 27, 2006•6 citations
Continuous–variable entanglement in the interacting system of a mesoscopic Josephson junction with a squeezed field is investigated. It is shown that when the cavity field is initially prepared in a squeezed vacuum state and the junction in its lowest energy state, the coupling system can evolve into a two-mode Gaussian state. The time-dependent characteristic function in the Wigner representation for the system is analytically obtained, and the squeezing degree of the initial cavity field turns out to have not only an apparent enhancing but also a weakening effect on the entanglement of the coupling system under suitable parameter conditions.