Sudden violation of the CHSH inequality in a two qubits system
arXiv:1002.1000 · doi:10.1088/0031-8949/2010/T140/014055
Abstract
I study the dynamics of the violation of the CHSH inequality for two qubits interacting with a common zero-temperature non-Markovian environment. I demonstrate sudden violation of the inequality for two qubits initially prepared in a factorized state. Due to the strong coupling between the qubits and the reservoir, the dynamics is characterized by numerous sharp revivals. Furthermore I focus on a more realistic physical system in which the spontaneous emission for the qubits is taken into account. When including spontaneous emission even for small decay parameters, revivals in the violation are heavily damped out. If the decay rates exceed a certain threshold, the inequality turns out to be always satisfied.
Accepted by Physica Scripta as part of the Proceedings of CEWQO09
References in corpus (10)
- Sudden Death of Entanglement
- Non-Markovian effects on the dynamics of entanglement
- Protecting entanglement via the quantum Zeno effect
- Dark periods and revivals of entanglement in a two qubit system
- Dynamics of the entanglement between two oscillators in the same environment
- Sudden death and sudden birth of entanglement in common structured reservoirs
- Delayed (sudden) birth of entanglement
- Off-resonant entanglement generation in a lossy cavity
- Dynamics of Non Classically Reproducible Entanglement
- Reservoir cross-over in entanglement dynamics