Steady entanglement out of thermal equilibrium

Abstract

We study two two-level atomic quantum systems (qubits) placed close to a body held at a temperature different from that of the surrounding walls. While at thermal equilibrium the two-qubit dynamics is characterized by not entangled steady thermal states, we show that absence of thermal equilibrium may bring to the generation of entangled steady states. Remarkably, this entanglement emerges from the two-qubit dissipative dynamic itself, without any further external action on the two qubits, suggesting a new protocol to produce and protect entanglement which is intrinsically robust to environmental effects.

6 pages, 4 figures, some typos corrected with respect to both the previous arXiv and published versions

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Cited by in corpus (25)

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• Entanglement dynamics for uniformly accelerated two-level atoms
• Quantum thermal machines with single nonequilibrium environments
• Creation and protection of entanglement in systems out of thermal equilibrium
• Quantum thermal machine acting on a many-body quantum system: role of correlations in thermodynamic tasks
• Robust entanglement with 3D nonreciprocal photonic topological insulators
• Otto engine beyond its standard quantum limit
• Heralded generation of maximal entanglement in any dimension via incoherent coupling to thermal baths
• Casimir-Lifshitz force out of thermal equilibrium between dielectric gratings
• Improving autonomous thermal entanglement generation using a common reservoir
• Non equilibrium dissipation-driven steady many-body entanglement
• Influence of equilibrium and nonequilibrium environments on macroscopic realism through the Leggett-Garg inequalities
• Heat transfer in transversely coupled qubits: Optically controlled thermal modulator with common reservoirs
• Quantumness and speedup limit of a qubit under transition frequency modulation
• Entanglement generation from athermality
• Entanglement versus Bell nonlocality of quantum nonequilibrium steady states
• Generation of minimum energy entangled states
• Distributed thermal tasks on many-body systems through a single quantum machine
• Impossibility of bosonic autonomous entanglement engines in the weak-coupling limit
• Casimir-Polder force for a polarizable molecule near a dielectric substrate out of thermal equilibrium
• Entanglement on macroscopic scales in a resonantly laser-excited atomic ensemble
• The thermalization of a two-level atom in a planar dielectric system out of thermal equilibrium