2006/02/28 by Tamás Geszti, Tamas Geszti, József Zsolt Bernád +1
Computer Science · Physics and Astronomy · #Charge (physics) #Computer science #Coulomb #Coulomb blockade #Detector #Electron #Master equation #Noise (video) #Optics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.73.235343
published as Phys. Rev. B 73, 235343 (2006), Erratum: Phys. Rev. B 77, 049903 (2008) · 5 pages, 3 eps figures, corrected according to published Erratum
openalex publication_date 2006/06/23 · arxiv created 2008/02/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A double-quantum-dot charge detector, with one dot Coulomb coupled to the electron to be detected and the other modulated by a time-dependent plunger voltage, is analyzed in a minimal model. The signal and noise of the detector are calculated by a standard master equation and MacDonald formula technique. We find a dip in the noise spectrum at the double Rabi frequency of the double dot, defining the bandwidth available for detecting charges in motion.