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Interacting adiabatic quantum motor

Bruch, Anton and Kusminskiy, Silvia Viola and Refael, Gil and von Oppen, Felix (2018) Interacting adiabatic quantum motor. Physical Review B, 97 (19). Art. No. 195411. ISSN 2469-9950. doi:10.1103/PhysRevB.97.195411.

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We present a field-theoretic treatment of an adiabatic quantum motor. We explicitly discuss a motor called the Thouless motor which is based on a Thouless pump operating in reverse. When a sliding periodic potential is considered to be the motor degree of freedom, a bias voltage applied to the electron channel sets the motor in motion. We investigate a Thouless motor whose electron channel is modeled as a Luttinger liquid. Interactions increase the gap opened by the periodic potential. For an infinite Luttinger liquid the coupling-induced friction is enhanced by electron-electron interactions. When the Luttinger liquid is ultimately coupled to Fermi liquid reservoirs, the dissipation reduces to its value for a noninteracting electron system for a constant motor velocity. Our results can also be applied to a motor based on a nanomagnet coupled to a quantum spin Hall edge.

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Additional Information:© 2018 American Physical Society. Received 15 December 2017; published 9 May 2018. This work was supported in part by CRC 183 and SPP 1666 of the Deutsche Forschungsgemeinschaft. G.R. is grateful for support from the Packard Foundation, as well as from the IQIM, an NSF PFC, and to the Aspen Center for Physics, supported by NSF Grant No. PHY-1607611.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Deutsche Forschungsgemeinschaft (DFG)CRC 183
Deutsche Forschungsgemeinschaft (DFG)SPP 1666
David and Lucile Packard FoundationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Issue or Number:19
Record Number:CaltechAUTHORS:20180509-110549288
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86313
Deposited By: Tony Diaz
Deposited On:09 May 2018 20:52
Last Modified:15 Nov 2021 20:37

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