Dynamics and protection of entanglement in n-qubit systems within Markovian and non-Markovian environments

Abstract

We provide an analytical investigation of the pairwise entanglement dynamics for a system, consisting an arbitrary number of qubits dissipating into a common and non-Markovian environment for both weak and strong coupling regimes. In the latter case, a revival of pairwise entanglement due to the memory depth of the environment is observed. The leakage of photons into a continuum state is assumed to be the source of dissipation. We show that for an initially Werner state, the environment washes out the pairwise entanglement, but a series of non-selective measurements can protect the relevant entanglement. On the other hand, by limiting the number of qubits initially in the superposition of single excitation, a stationary entanglement can be created between qubits initially in the excited and ground states. Finally, we determine the stationary distribution of the entanglement versus the total number of qubits in the system.

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Cited by in corpus (16)

• Quantum cryptography over non-Markovian channels
• Quantum Zeno and Anti-Zeno Effects on the Entanglement Dynamics of Qubits Dissipating into a Common and non-Markovian Environment
• Maximal Steered Coherence Protection by Quantum Reservoir Engineering
• Entanglement Swapping Between Dissipative Systems
• Entanglement dynamics of an arbitrary number of moving qubits in a common environment
• Universal feedback control of two-qubit entanglement
• Coalescence of non-Markovian dissipation, quantum Zeno effect and non-Hermitian physics, in a simple realistic quantum system
• Generation of long-living entanglement between two distant three-level atoms in non-Markovian environments
• Enforcing dissipative entanglement by feedback
• Qubit Movement-Assisted Entanglement Swapping
• Entanglement versus Bell nonlocality of quantum nonequilibrium steady states
• Measurement enhances long-distance Entanglement generation in spin chains with dissipative processes
• Dephasing effects on quantum correlations and teleportation in presence of state dependent bath
• The transfer of nonlocality between two- and three-qubit dissipative systems with counter-rotating-wave terms
• Entanglement Protection of Classically Driven Qubits in a Lossy Cavity
• Distributed entanglement generation from asynchronously excited qubits