Pauli-Heisenberg Oscillations in Electron Quantum Transport

Abstract

We measure the current fluctuations emitted by a normal-metal-insulator-normal-metal tunnel junction with a very wide bandwidth, from 0.3 to 13 GHz, down to very low temperature T=35 mK. This allows us to perform the spectroscopy (i.e., measure the frequency dependence) of thermal noise (no dc bias, variable temperature) and shot noise (low temperature, variable dc voltage bias). Because of the very wide bandwidth of our measurement, we deduce the current-current correlator in the time domain. We observe the thermal decay of this correlator as well as its oscillations with a period h/eV, a direct consequence of the effect of the Pauli and Heisenberg principles in quantum electron transport.

Dynamics of pure spin current in high-frequency quantum regime

“…principle [19]. In the same way, the present oscillation suggests that this principle also affects transport dynamics of the spin current even when there is no net charge current.…”

Electron and electron-hole quasiparticle states in a driven quantum contact

“…Although quantum optics with electrons is in general analogous to the one with photons, there are important distinctions between the two due to differences in particle statistics, vacuum state (Fermi sea vs photonic vacuum), interaction between electrons, decoherence, etc. In particular, a simple constant-voltage source can act as a single-electron turnstile [9] due to the Fermi statistics, which is responsible for regular emission of electrons on a time scale h/eV , where e is the electron charge, h is the Planck constant, and V is the dc voltage drop over the conductor.A step forward towards electron quantum optics has been made recently with the realization of on-demand electron sources [4,5,8,[10][11][12][13][14] which can create single-to few-particle excitations [15][16][17][18][19][20][21]. This facilitates the full control of the quantum state of electrons in mesoscopic conductors and the dynamical control of elementary excitations using suitably tailored voltage pulses [22].…”

“…Although quantum optics with electrons is in general analogous to the one with photons, there are important distinctions between the two due to differences in particle statistics, vacuum state (Fermi sea vs photonic vacuum), interaction between electrons, decoherence, etc. In particular, a simple constant-voltage source can act as a single-electron turnstile [9] due to the Fermi statistics, which is responsible for regular emission of electrons on a time scale h/eV , where e is the electron charge, h is the Planck constant, and V is the dc voltage drop over the conductor.…”

Transient dynamics and waiting time distribution of molecular junctions in the polaronic regime

“…While these studies have been traditionally restricted to the stationary regime (corresponding to long measuring times), the advent of single-electron sources [3][4][5] has triggered the interest in the short-time behavior. On the one hand this knowledge would be useful to fully characterize the single-electron emitters in the high-frequency range [6]. On the other hand, understanding the short-time dynamics is a necessary requirement for the use of nanodevices in the detection of individual electrons [7].…”