Environment generated quantum correlations in bipartite qubit-qutrit systems
arXiv:1612.06981 · doi:10.1016/j.ijleo.2015.11.178
Abstract
The dynamics of entanglement and quantum discord for qubit-qutrit systems are studied in the presence of phase damping and amplitude damping noises. Both one way and two couplings of the marginal systems with the environments are considered. Entanglement sudden death is unavoidable under any setup, however, the required time span depends on the way of coupling. On the other hand, the dynamics of quantum discord strongly depends both on the nature of environment and on the number of dimensions of the Hilbert space of the coupled marginal system. We show that freezing and invariance of quantum discord, as previously reported in the literature, are limited to some special cases. Most importantly, it is noted that under some particular coupling the existence of environment can guarantee the generation of nonclassical correlations.
14 pages, 4 figures
References in corpus (11)
- Finite-Time Disentanglement via Spontaneous Emission
- Quantum discord and the power of one qubit
- Robustness of quantum discord to sudden death
- Quantum discord and quantum phase transition in spin chains
- Interpreting quantum discord through quantum state merging
- Operational interpretations of quantum discord
- Vanishing quantum discord is necessary and sufficient for completely positive maps
- Operational Significance of Discord Consumption: Theory and Experiment
- Entanglement and discord: accelerated observations of local and global modes
- Verification of quantum discord
- Invariant Quantum Discord in Qubit-Qutrit Systems under Local Dephasing