Quantum correlations as precursors of entanglement
arXiv:1008.3866 · doi:10.1103/PhysRevA.82.032112
Abstract
We show that for two initially excited qubits, interacting via dipole forces and with a common reservoir, entanglement is preceded by the emergence of quantum and classical correlations. After a time lag, entanglement finally starts building up, giving rise to a peculiar entangled state, with very small classical correlations. Different measures of quantum correlations are discussed, and their dynamics are compared and shown to lead to coincident values of these quantifiers for several ranges of time.
11 pages, 6 figures, accepted in Physical Review A
References in corpus (17)
- Finite-Time Disentanglement via Spontaneous Emission
- Quantum discord and the power of one qubit
- Sudden Death of Entanglement
- Experimental quantum computing without entanglement
- Quantum Open System Theory: Bipartite Aspects
- Classical and quantum correlations under decoherence
- Dark periods and revivals of entanglement in a two qubit system
- Sudden Death of Entanglement: Classical Noise Effects
- Sudden Death of Entanglement of Two Jaynes-Cummings Atoms
- Vanishing quantum discord is necessary and sufficient for completely positive maps
- Delayed (sudden) birth of entanglement
- Direct measurement of finite-time disentanglement induced by a reservoir
- Correlations in local measurements on a quantum state, and complementarity as an explanation of nonclassicality
- Quantum discord and local demons
- Quantum Correlation Without Classical Correlations
- Environment-induced entanglement with a single photon
- Vacuum - induced stationary entanglement in radiatively coupled three - level atoms
Cited by in corpus (27)
- Quantum discord for general two--qubit states: Analytical progress
- Open-System Dynamics of Entanglement
- Quantum discord and its allies: a review
- Quantum discord for two-qubit X states: Analytical formula with very small worst-case error
- Theoretical and experimental aspects of quantum discord and related measures
- Ground state factorization and correlations with broken symmetry
- Propagation of non-classical correlations across a quantum spin chain
- Measurement-induced disturbances and nonclassical correlations of Gaussian states
- Deterministic creation of stationary entangled states by dissipation
- The dynamics of local quantum uncertainty and trace distance discord for two-qubit X states under decoherence: a comparative study
- Experimental investigation of enviroment--induced entanglement using an all--optical setup
- Analytical solutions and criteria for the quantum discord of two-qubit X-states
- Quantum discord evolution of three-qubit states under noisy channels
- Universal evolution of non-classical correlations due to collective spontaneous emission
- Collapse-revival of quantum discord and entanglement
- Correlations in optically-controlled quantum emitters
- Thermally generated long-lived quantum correlations for two atoms trapped in fiber-coupled cavities
- Quantum Correlation Dynamics in Controlled Two-Coupled-Qubit Systems
- Quantum discord in a spin system with symmetry breaking
- Entanglement generation between distant spins via quasilocal reservoir engineering
- Evolution of quantum correlations in a two-atom system
- Quantum steering and quantum discord under noisy channels and entanglement swapping
- Thermal effects on bipartite and multipartite correlations in fiber coupled cavity arrays
- Quantum correlations from classically correlated states
- Frozen and Invariant Quantum Discord under Local Dephasing Noise
- Quantum and classical correlations and Werner states in finite spin linear arrays
- Bipartite entanglement induced by classically-constrained quantum dissipative dynamics