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Title: Entanglement of a qubit coupled to a resonator in the adiabatic regime

Abstract

We discuss the ground state entanglement of a bi-partite system, composed by a qubit strongly interacting with an oscillator mode, as a function of the coupling strength, the transition frequency and the level asymmetry of the qubit. This is done in the adiabatic regime in which the time evolution of the qubit is much faster than the oscillator one. Within the adiabatic approximation, we obtain a complete characterization of the ground state properties of the system and of its entanglement content.

Authors:
;  [1]; ;  [1];  [2]
  1. Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy)
  2. (Serbia and Montenegro) (Italy)
Publication Date:
OSTI Identifier:
20786895
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.032346; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ADIABATIC APPROXIMATION; ASYMMETRY; COUPLING; GROUND STATES; OSCILLATORS; QUANTUM COMPUTERS; QUANTUM ENTANGLEMENT; QUBITS; RESONATORS

Citation Formats

Liberti, Giuseppe, Piperno, Franco, Zaffino, Rosa Letizia, Plastina, Francesco, and INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende. Entanglement of a qubit coupled to a resonator in the adiabatic regime. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Liberti, Giuseppe, Piperno, Franco, Zaffino, Rosa Letizia, Plastina, Francesco, & INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende. Entanglement of a qubit coupled to a resonator in the adiabatic regime. United States. doi:10.1103/PHYSREVA.73.0.
Liberti, Giuseppe, Piperno, Franco, Zaffino, Rosa Letizia, Plastina, Francesco, and INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende. Wed . "Entanglement of a qubit coupled to a resonator in the adiabatic regime". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786895,
title = {Entanglement of a qubit coupled to a resonator in the adiabatic regime},
author = {Liberti, Giuseppe and Piperno, Franco and Zaffino, Rosa Letizia and Plastina, Francesco and INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende},
abstractNote = {We discuss the ground state entanglement of a bi-partite system, composed by a qubit strongly interacting with an oscillator mode, as a function of the coupling strength, the transition frequency and the level asymmetry of the qubit. This is done in the adiabatic regime in which the time evolution of the qubit is much faster than the oscillator one. Within the adiabatic approximation, we obtain a complete characterization of the ground state properties of the system and of its entanglement content.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}