Observation of Quantum Oscillations in the Photo-assisted Shot Noise of a Tunnel Junction

Abstract

We report measurements of the low frequency current fluctuations of a tunnel junction placed at very low temperature biased by a time-dependent voltage $V(t)=V(1+\cos 2\pi \nu t)$. We observe that the excess noise generated by the ac excitation exhibits quantum oscillations as a function of the dc bias, with a period given by $h\nu /e$ with $e$ the charge of a single electron. This is a direct consequence of the quantum nature of electricity in a normal conductor.

3 pages, 3 figures

References in corpus (5)

• Integer and fractional charge Lorentzian voltage pulses analyzed in the frame of Photon-assisted Shot Noise
• Dynamics of Quantum Noise in a Tunnel Junction under ac Excitation
• Elementary events of electron transfer in a voltage-driven quantum point contact
• Elementary Charge Transfer Processes in Mesoscopic Conductors
• Control of electron-hole pair generation by biharmonic voltage drive of a quantum point contact

Cited by in corpus (16)

• A Josephson frequency for fractionally charged anyons
• Energy and power fluctuations in ac-driven coherent conductors
• Electron and electron-hole quasiparticle states in a driven quantum contact
• Photon-assisted shot noise in graphene in the Terahertz range
• Dynamical Coulomb blockade of tunnel junctions driven by alternating voltages
• Elementary Andreev Processes in a Driven Superconductor-Normal Metal Contact
• Correlations between charge and energy current in ac-driven coherent conductors
• Noise Intensity-Intensity Correlations and the Fourth Cumulant of Current Fluctuations
• Effects of Coulomb interaction on photon-assisted current noises through a quantum dot
• Normal and abnormal electron-hole pairs in a voltage-pulse-driven quantum conductor
• Characterization and control of charge transfer in a tunnel junction
• Photo-assisted shot noise probes multiple charge carriers in quantum Hall edges
• Photon-assisted Dynamical Coulomb Blockade in a Tunnel Junction
• Excess photon-assisted noise of Majorana and Andreev bound states
• Enhancement of Coulomb blockade in epsilon near zero and hyperbolic metamaterials
• Statistics of the quantized microwave electromagnetic field in mesoscopic elements at low temperature