Journal
PHYSICAL REVIEW B
Volume 78, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.214302
Keywords
electron-phonon interactions; micromechanical resonators; nanotechnology; quantum dots
Funding
- National Security Agency (NSA)
- Laboratory for Physical Sciences (LPS)
- (U.S.) Army Research Office (ARO)
- National Science Foundation (NSF) [EIA-0130383]
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We consider a nanomechanical resonator coupled to a double quantum dot. We demonstrate how the finite-frequency current-noise spectrum through the double quantum dot can be used to distinguish classical and quantum behavior in the nearby nanoelectromechanical resonator. We also show how the full-frequency current-noise spectrum gives important information on the combined double quantum dot-resonator energy spectrum. Finally, we point out regimes where the quantum state of the resonator becomes squeezed and also examine the cross-correlated electron-phonon current noise.
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