Quantum-Limited Sensitivity of Single-Electron-Transistor-Based Displacement Detectors
- 8 January 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (1), 018303
- https://doi.org/10.1103/physrevlett.92.018303
Abstract
We consider a model of a quantum-mechanical resonator capacitively coupled to a single electron transistor (SET). The tunnel current in the SET is modulated by the vibrations of the resonator, and thus the system operates as a displacement detector. We analyze the effect of the backaction noise of charge fluctuations in the SET onto the dynamics of the resonator and evaluate the displacement sensitivity of the system. The relation between the “classical” and “quantum” parts of the SET charge noise and their effect on the measured system are also discussed.This publication has 19 references indexed in Scilit:
- Researchers Race to Put the Quantum Into MechanicsScience, 2003
- Nanodevice motion at microwave frequenciesNature, 2003
- Piezoelectric displacement sensing with a single-electron transistorApplied Physics Letters, 2002
- Nanomechanical displacement sensing using a quantum point contactApplied Physics Letters, 2002
- Intrinsic noise of a micromechanical displacement detector based on the radio-frequency single-electron transistorJournal of Applied Physics, 2002
- Entanglement and Decoherence of a Micromechanical Resonator via Coupling to a Cooper-Pair BoxPhysical Review Letters, 2002
- Stiction, adhesion energy, and the Casimir effect in micromechanical systemsPhysical Review B, 2001
- Sensitivity of a micromechanical displacement detector based on the radio-frequency single-electron transistorApplied Physics Letters, 2000
- Precision Measurement of the Casimir Force from 0.1 toPhysical Review Letters, 1998
- Mechanical detection of magnetic resonanceNature, 1992