Scientific Results

Design and characterization of a quantum heat pump in a driven quantum gas

Year: 2020

Authors: Roy A., Eckardt A.

Autors Affiliation: Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany; Univ Trento, INO CNR BEC Ctr, I-38123 Trento, Italy;‎ Univ Trento, Dipartimento Fis, I-38123 Trento, Italy; Tech Univ Berlin, Inst Theoret Phys, Hardenbergstr 36, D-10623 Berlin, Germany

Abstract: We propose the implementation of a quantum heat pump with ultracold atoms. It is based on two periodically driven coherently coupled quantum dots using ultracold atoms. Each dot possesses two relevant quantum states and is coupled to a fermionic reservoir. The working principle is based on energy-selective driving-induced resonant tunneling processes, where a particle that tunnels from one dot to the other either absorbs or emits the energy quantum h omega associated with the driving frequency, depending on its energy. We characterize the device using Floquet theory and compare simple analytical estimates to numerical simulations based on the Floquet-Born-Markov formalism. In particular, we show that driving-induced heating is directly linked to the micromotion of the Floquet states of the system.


Volume: 101 (4)      Pages from: 042109  to: 042109

KeyWords: quantum heat pump; Floquet theory
DOI: 10.1103/PhysRevE.101.042109

Citations: 1
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