Photon exchange and correlation transfer in atom-atom entanglement dynamics
- 6 January 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 79 (1), 012301
- https://doi.org/10.1103/physreva.79.012301
Abstract
We analyze the entanglement dynamics of a system composed by a pair of neutral two-level atoms that are initially entangled, and the electromagnetic field, initially in the vacuum state, within the formalism of perturbative quantum field theory up to the second order. We show that entanglement sudden death and revival can occur while the atoms remain spacelike separated and therefore cannot be related with photon exchange between the atoms. We interpret these phenomena as the consequence of a transfer of atom-atom entanglement to atom-field entanglement and vice versa. We also consider the different bipartitions of the system, finding similar relationships between their entanglement evolutions.Keywords
This publication has 25 references indexed in Scilit:
- Sudden Birth versus Sudden Death of Entanglement in Multipartite SystemsPhysical Review Letters, 2008
- Dynamics of the Entanglement between Two Oscillators in the Same EnvironmentPhysical Review Letters, 2008
- Entanglement dynamics of two independent qubits in environments with and without memoryPhysical Review A, 2008
- Environment-Induced Sudden Death of EntanglementScience, 2007
- Pairwise concurrence dynamics: a four-qubit modelJournal of Physics B: Atomic, Molecular and Optical Physics, 2007
- Quantum Open System Theory: Bipartite AspectsPhysical Review Letters, 2006
- Dark periods and revivals of entanglement in a two-qubit systemPhysical Review A, 2006
- Local aspects of disentanglement induced by spontaneous emissionJournal of Physics A: General Physics, 2006
- Finite-Time Disentanglement Via Spontaneous EmissionPhysical Review Letters, 2004
- Dynamics of quantum entanglementPhysical Review A, 2001