Universal evolution of non-classical correlations due to collective spontaneous emission

Abstract

We explore the spontaneous generation and decay of quantum correlations between two identical atoms coupled to a common Markovian environment in the presence of electromagnetic field modes. For this purpose, we analyze the dynamics of quantum correlations by employing the concurrence, the trace quantum discord and the local quantum uncertainty, for collective Dicke states. It is shown that the collective damping and dipole-dipole interaction plays a key role in enhancing non-classical correlations during the process of intrinsic decoherence. The quantum correlations can be maintained over a long time but for small distance between the two atoms.

10 Pages, 12 Figures

References in corpus (13)

• Finite-Time Disentanglement via Spontaneous Emission
• Necessary and sufficient condition for non-zero quantum discord
• Sudden Death of Entanglement
• Classical and quantum correlations under decoherence
• Dark periods and revivals of entanglement in a two qubit system
• Interpreting quantum discord through quantum state merging
• Operational interpretations of quantum discord
• Delayed (sudden) birth of entanglement
• Quantum discord bounds the amount of distributed entanglement
• Quantum cost for sending entanglement
• Optimal measurements to access classical correlations of two-qubit states
• Unifying approach to the quantification of bipartite correlations by Bures distance
• The dynamics of local quantum uncertainty and trace distance discord for two-qubit X states under decoherence: a comparative study

Cited by in corpus (4)

• A comparative study of local quantum Fisher information and local quantum uncertainty in Heisenberg $XY$ model
• The dynamic behaviors of local quantum uncertainty for three-qubit X states under decoherence channels
• Quantum Fisher information matrix in Heisenberg XY model
• Thermal local quantum uncertainty in a two-qubit-superconducting system under decoherence