Two-qubit entanglement dynamics in a symmetry-broken environment
- 7 June 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 69 (6) , 062308
- https://doi.org/10.1103/physreva.69.062308
Abstract
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.Keywords
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