Dynamics of quantum entanglement
Top Cited Papers
- 10 December 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 65 (1) , 012101
- https://doi.org/10.1103/physreva.65.012101
Abstract
A model of discrete dynamics of entanglement of a bipartite quantum state is considered. It involves a global unitary dynamics of the system and periodic actions of local bistochastic or decaying channel. For initially pure states the decay of entanglement is accompanied by an increase of von Neumann entropy of the system. We observe and discuss revivals of entanglement due to unitary interaction of subsystems. For some mixed states having different marginal entropies of the subsystems we find an asymmetry in speed of entanglement decay. The entanglement of these states decreases faster, if the depolarizing channel acts on the “classical” subsystem, characterized by smaller marginal entropy.Keywords
All Related Versions
This publication has 23 references indexed in Scilit:
- Local environment can enhance fidelity of quantum teleportationPhysical Review A, 2000
- Impossible colorings and Bell's theoremPhysics Letters A, 1999
- Decoherence, einselection and the existential interpretation (the rough guide)Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1998
- Volume of the set of separable statesPhysical Review A, 1998
- Entanglement of a Pair of Quantum BitsPhysical Review Letters, 1997
- Mixed-state entanglement and quantum error correctionPhysical Review A, 1996
- Quantum redundancies and local realismPhysics Letters A, 1994
- General state changes in quantum theoryAnnals of Physics, 1971
- Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?Physical Review B, 1935
- Discussion of Probability Relations between Separated SystemsMathematical Proceedings of the Cambridge Philosophical Society, 1935