Hidden entanglement, system-environment information flow and non-Markovianity

Abstract

It is known that entanglement dynamics of two noninteracting qubits, locally subjected to classical environments, may exhibit revivals. A simple explanation of this phenomenon may be provided by using the concept of hidden entanglement, which signals the presence of entanglement that may be recovered without the help of nonlocal operations. Here we discuss the link between hidden entanglement and the (non-Markovian) flow of classical information between the system and the environment.

9 pages, 2 figures; proceedings of the conference IQIS 2013, September 24-26 2013, Como, Italy

References in corpus (7)

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• Cavity-based architecture to preserve quantum coherence and entanglement
• Preserving entanglement and nonlocality in solid-state qubits by dynamical decoupling
• Non-Markovianity through flow of information between a system and an environment
• Harnessing non-Markovian quantum memory by environmental coupling
• Distributed correlations and information flows within a hybrid multipartite quantum-classical system
• Protecting entanglement by adjusting the velocities of moving qubits inside non-Markovian environments
• To freeze or not to: Quantum correlations under local decoherence
• Non-Markovianity and coherence of a moving qubit inside a leaky cavity
• Quantumness and memory of one qubit in a dissipative cavity under classical control
• Overview on the phenomenon of two-qubit entanglement revivals in classical environments
• Activating information backflow with the assistance of quantum SWITCH
• Entanglement thresholds for displaying the quantum nature of teleportation
• Generalized approach to quantify correlations in bipartite quantum systems
• Regular patterns in the information flow of local dephasing channels
• Emergence of maximal hidden quantum correlations and its trade-off with the filtering probability in dissipative two-qubit systems
• Memory effects in high-dimensional systems faithfully identified by Hilbert-Schmidt speed-based witness
• Role of complementary correlations in the evolution of classical and quantum correlations under Markovian decoherence
• Fate of multiparticle entanglement when one particle becomes classical