2004/05/28 by Aashish A. Clerk, A. A. Clerk, S. M. Girvin · 2 citations
Physics and Astronomy · #Computer science #Condensed matter physics #Coupling (piping) #Detector #Displacement (psychology) #Force Microscopy Techniques and Applications #Materials science #Mechanical and Optical Resonators #Noise (video) #Optics #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum noise #Quantum tunnelling #Shot noise #Tunnel junction #Vackář oscillator #Voltage #Voltage-controlled oscillator #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.70.121303
published as Phys. Rev. B 70, 121303(R) (2004). · 5 pages, 2 figures
arxiv created 2004/05/28 · openalex publication_date 2004/09/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study quantum-mechanically the frequency-dependent current noise of a tunnel-junction coupled to a nanomechanical oscillator. The cases of both dc and ac voltage bias are considered, as are the effects of intrinsic oscillator damping. The dynamics of the oscillator can lead to large signatures in the shot noise, even if the oscillator-tunnel junction coupling is too weak to yield an appreciable signature in the average current. Moreover, the modification of the shot noise by the oscillator cannot be fully explained by a simple classical picture of a fluctuating conductance.