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Autonomous quantum thermal machine for generating steady-state entanglement

Jonatan Bohr Brask 1, * Géraldine Haack 2 Nicolas Brunner 1 Marcus Huber 3 
* Corresponding author
2 GT - Laboratory of Quantum Theory
PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS : DRF/IRIG/PHELIQS
Abstract : We discuss a simple quantum thermal machine for the generation of steady-state entanglement between two interacting qubits. The machine is autonomous in the sense that it uses only incoherent interactions with thermal baths, but no source of coherence or external control. By weakly coupling the qubits to thermal baths at different temperatures, inducing a heat current through the system, steady-state entanglement is generated far from thermal equilibrium. Finally, we discuss two possible implementations, using superconducting flux qubits or a semiconductor double quantum dot. Experimental prospects for steady-state entanglement are promising in both systems.
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Submitted on : Friday, January 8, 2016 - 3:58:57 PM
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Jonatan Bohr Brask, Géraldine Haack, Nicolas Brunner, Marcus Huber. Autonomous quantum thermal machine for generating steady-state entanglement. New Journal of Physics, Institute of Physics: Open Access Journals, 2015, 17 (11), pp.113029. ⟨10.1088/1367-2630/17/11/113029⟩. ⟨cea-01253076⟩



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