Steady-state entanglement production in a quantum thermal machine with
continuous feedback control
- URL: http://arxiv.org/abs/2309.07696v1
- Date: Thu, 14 Sep 2023 13:15:45 GMT
- Title: Steady-state entanglement production in a quantum thermal machine with
continuous feedback control
- Authors: Giovanni Francesco Diotallevi, Bj\"orn Annby-Andersson, Peter
Samuelsson, Armin Tavakoli, Pharnam Bakhshinezhad
- Abstract summary: We study entanglement generation in a two-qubit quantum thermal machine in the presence of a continuous feedback protocol.
We show that there exists an ideal operation regime where the quality of entanglement is significantly improved.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum thermal machines can generate steady-state entanglement by harvesting
spontaneous interactions with local environments. However, using minimal
resources and control, the entanglement is typically very noisy. Here, we study
entanglement generation in a two-qubit quantum thermal machine in the presence
of a continuous feedback protocol. Each qubit is measured continuously and the
outcomes are used for real-time feedback to control the local
system-environment interactions. We show that there exists an ideal operation
regime where the quality of entanglement is significantly improved, to the
extent that it can violate standard Bell inequalities and uphold quantum
teleportation. In particular, we find, for ideal operation, that the heat
current across the system is proportional to the entanglement concurrence.
Finally, we investigate the robustness of entanglement production when the
machine operates away from the ideal conditions.
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