Published June 2004 | Version v1
Journal article Metadata-only

Two-qubit entanglement dynamics in a symmetry-broken environment

Creators

  • 1. Dipartimento di Fisica, Universita di Roma 'La Sapienza', I-00185 Rome (Italy)
  • 2. Dipartimento di Fisica, Universita di Bologna, via Irnerio 46, I-40126 Bologna (Italy)
  • 3. Dipartimento di Fisica, Universita di Camerino, I-62032 Camerino (Italy)

Description

We study the temporal evolution of entanglement pertaining to two qubits interacting with a thermal bath. In particular we consider the simplest nontrivial spin bath models where symmetry breaking occurs and treat them by mean field approximation. We analytically find decoherence free entangled states as well as entangled states with an exponential decay of the quantum correlation at finite temperature

Additional details

Identifiers

DOI
10.1103/PhysRevA.69.062308;
arXiv
arXiv:quant-ph/0402073v1;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
69
Journal Issue
6
Journal Page Range
p. 062308-062308.8
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36084741
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
COMMUNICATIONS; CORRELATIONS; DECAY; ENERGY LEVELS; EVOLUTION; MEAN-FIELD THEORY; SPIN; SYMMETRY; SYMMETRY BREAKING
Descriptors DEC
ANGULAR MOMENTUM; PARTICLE PROPERTIES

Optional Information

Notes
(c) 2004 The American Physical Society