Nonequilibrium thermal entanglement

TL;DR

This paper investigates how heat flow and temperature differences affect quantum entanglement, revealing that entanglement can be maintained at the same level with different heat currents and purity, and identifying a transition in entanglement behavior.

Contribution

It demonstrates the impact of nonequilibrium conditions on quantum entanglement, including the existence of states with identical entanglement but different heat flows and purity levels.

Findings

Different quantum states with same entanglement but varying purity and heat currents.

Identification of a nonequilibrium transition in entanglement enhancement and suppression.

Analysis of heat current, entropy production, and entanglement under temperature gradients.

Abstract

Results on heat current, entropy production rate and entanglement are reported for a quantum system coupled to two different temperature heat reservoirs. By applying a temperature gradient, different quantum states can be found with exactly the same amount of entanglement but different purity degrees and heat currents. Furthermore, a nonequilibrium enhancement-suppression transition behavior of the entanglement is identified.