Temperature measurement and phonon number statistics of a nanoelectromechanical resonator

Neto, O.P.D.S., Deoliveira, M.C. and Milburn, G.J. (2015) Temperature measurement and phonon number statistics of a nanoelectromechanical resonator. New Journal of Physics, 17 9: . doi:10.1088/1367-2630/17/9/093010

Author Neto, O.P.D.S.
Deoliveira, M.C.
Milburn, G.J.
Title Temperature measurement and phonon number statistics of a nanoelectromechanical resonator
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2015-09-09
Year available 2015
Sub-type Article (original research)
DOI 10.1088/1367-2630/17/9/093010
Open Access Status DOI
Volume 17
Issue 9
Total pages 9
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Collection year 2016
Language eng
Formatted abstract
Measuring thermodynamic quantities can be easy or not, depending on the system that is being studied. For a macroscopic object, measuring temperatures can be as simple as measuring how much a column of mercury rises when in contact with the object. At the small scale of quantum electromechanical systems, such simple methods are not available and invariably detection processes disturb the system state. Here we propose a method for measuring the temperature on a suspended semiconductor membrane clamped at both ends. In this method, the membrane is mediating a capacitive coupling between two transmission line resonators (TLR). The first TLR has a strong dispersion, that is, its decaying rate is larger than its drive, and its role is to pump in a pulsed way the interaction between the membrane and the second TLR. By averaging the pulsed measurements of the quadrature of the second TLR we show how the temperature of the membrane can be determined. Moreover the statistical description of the state of the membrane, which is directly accessed in this approach is significantly improved by the addition of a Josephson junction coupled to the second TLR.
Keyword quantum statistics
electromechanical resonator
quantum optics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2016 Collection
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