Noise Dynamics in the Quantum Regime

Abstract

A time-dependent bias voltage on a tunnel junction generates a time-dependent modulation of its current fluctuations, and in particular of its variance. This translates into an excitation at frequency $\tilde{f}$ generating correlations between current fluctuating at any frequency $f$ and at frequency $\pm$ $\tilde{f}-f$. We report the measurement of such a correlation in the fully quantum regime, i.e. when both frequencies are much greater than $k_{B}T/h$ with $T$ the temperature. Such a correlator, usually referred to as the noise susceptibility, is involved in corrections to the measurements of higher-order moments and in the squeezing of noise.

arXiv comment4 pages, 4 figures, to be published in the 2023 International Conference on Noise and Fluctuations (ICNF) proceedings

References in corpus (7)

• Environmental effects in the third moment of voltage fluctuations in a tunnel junction
• Dynamics of Quantum Noise in a Tunnel Junction under ac Excitation
• Temperature dependent third cumulant of tunneling noise
• Observation of Squeezing in the Electron Quantum Shot Noise of a Tunnel Junction
• Quantum optics theory of electronic noise in coherent conductors
• Nonsymmetrized Correlations in Quantum Noninvasive Measurements
• Pauli-Heisenberg Blockade of Electron Quantum Transport

Cited by in corpus (2)

• Sensing Quantum Vacuum Fluctuations with Non-Gaussian Electronic Noise
• Absence of skewness in the voltage fluctuations of a tunnel junction in the quantum regime