Published August 5, 2013
| Submitted + Published
Journal Article
Open
Adiabatic Quantum Motors
Chicago
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Abstract
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.
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.Attached Files
Published - PhysRevLett.111.060802.pdf
Submitted - 1304.4969v1.pdf
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PhysRevLett.111.060802.pdf
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Additional details
- Eprint ID
- 41172
- Resolver ID
- CaltechAUTHORS:20130909-112144198
- Deutsche Forschungsgemeinschaft (DFG)
- SFB 658
- CONICET
- Alexander von Humboldt Foundation
- David and Lucile Packard Foundation
- Institute for Quantum Information and Matter (IQIM)
- NSF Physics Frontiers Center
- Gordon and Betty Moore Foundation
- Created
-
2013-09-16Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter