Time-invariant entanglement and sudden death of non-locality

Abstract

We investigate both theoretically and experimentally the dynamics of entanglement and non-locality for two qubits immersed in a global pure dephasing environment. We demonstrate the existence of a class of states for which entanglement is forever frozen during the dynamics, even if the state of the system does evolve. At the same time non-local correlations, quantified by the violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality, either undergo sudden death or are trapped during the dynamics.

5 pages, 5 figures

References in corpus (4)

• Non-Markovian effects on the dynamics of entanglement
• Protecting entanglement via the quantum Zeno effect
• Robust asymptotic entanglement under multipartite collective dephasing
• Bell inequality violation versus entanglement in presence of local decoherence

Cited by in corpus (10)

• Sudden Freezing and Thawing of Entanglement Sharing in a Shrunken Volume
• Generating and protecting correlated quantum states under collective dephasing
• Qubit-Qutrit ($2\otimes 3$) quantum systems: An investigation of some quantum correlations under collective dephasing
• The power of a control qubit in weak measurements
• Quantum steering and quantum discord under noisy channels and entanglement swapping
• Emergence of maximal hidden quantum correlations and its trade-off with the filtering probability in dissipative two-qubit systems
• Method for Generating Randomly Perturbed Density Operators Subject to Different Sets of Constraints
• Influence of Random Telegraph Noise on Quantum Bit Gate Operation
• Invariant entanglement and generation of quantum correlations under global dephasing
• Freezing dynamics of entanglement and nonlocality for qutrit-qutrit ($3\otimes 3$) quantum systems