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Adiabatic Quantum Motors

Bustos-Marún, Raúl and Refael, Gil and von Oppen, Felix (2013) Adiabatic Quantum Motors. Physical Review Letters, 111 (6). Art. No. 060802. ISSN 0031-9007. doi:10.1103/PhysRevLett.111.060802.

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When parameters are varied periodically, charge can be pumped through a mesoscopic conductor without applied bias. Here, we consider the inverse effect in which a transport current drives a periodic variation of an adiabatic degree of freedom. This provides a general operating principle for adiabatic quantum motors which we discuss here in general terms. We relate the work performed per cycle on the motor degree of freedom to characteristics of the underlying quantum pump and discuss the motors’ efficiency. Quantum motors based on chaotic quantum dots operate solely due to quantum interference, and motors based on Thouless pumps have ideal efficiency.

Item Type:Article
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Additional Information:© 2013 American Physical Society. Received 22 May 2013; published 5 August 2013. We acknowledge discussions with P. Brouwer as well as support by the Deutsche Forschungsgemeinschaft through SFB 658, CONICET, the Humboldt Foundation, the Packard Foundation, and the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Deutsche Forschungsgemeinschaft (DFG)SFB 658
Alexander von Humboldt FoundationUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Issue or Number:6
Classification Code:PACS: 07.10.Cm
Record Number:CaltechAUTHORS:20130909-112144198
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41172
Deposited By: Tony Diaz
Deposited On:16 Sep 2013 21:51
Last Modified:10 Nov 2021 04:26

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