A computational approach to quantum noise in time-dependent nanoelectronic devices

  title={A computational approach to quantum noise in time-dependent nanoelectronic devices},
  author={Benoit H. Gaury and Xavier Waintal},
  journal={Physica E-low-dimensional Systems \& Nanostructures},
  • B. Gaury, X. Waintal
  • Published 2016
  • Physics
  • Physica E-low-dimensional Systems & Nanostructures
We derive simple expressions that relate the noise and correlation properties of a general time-dependent quantum conductor to the wave functions of the system. The formalism provides a practical route for numerical calculations of quantum noise in an externally driven system. We illustrate the approach with numerical calculations of the noise properties associated to a voltage pulse applied on a one-dimensional conductor. The methodology is hower fully general and can be used for a large class… Expand

Figures from this paper

Towards realistic time-resolved simulations of quantum devices
We report on our recent efforts to perform realistic simulations of large quantum devices in the time domain. In contrast to d.c. transport where the calculations are explicitly performed at theExpand
Numerical Methods for Time-Resolved Quantum Nanoelectronics
Recent technical progress in the field of quantum nanoelectronics have lead toexciting new experiments involving coherent single electron sources.When quantum electronic devices are manipulated onExpand
Finite-frequency noise of interacting single-electron emitters: Spectroscopy with higher noise harmonics
We derive the symmetrized current-noise spectrum of a quantum dot, which is weakly tunnel-coupled to an electron reservoir and driven by a slow time-dependent gate voltage. This setup can be operatedExpand
Role of Quasiparticles in an Electric Circuit with Josephson Junctions.
The approach generalizes the standard resistor capacitor Josephson model to arbitrary junctions and provides a route for the quantitative modeling of superconducting-based circuits and captures nonequilibrium phenomena such as multiple Andreev reflection. Expand
Magnon-driven chiral charge and spin pumping and electron-magnon scattering from time-dependent quantum transport combined with classical atomistic spin dynamics
Using newly developed quantum-classical hybrid framework, we investigate interaction between spinpolarized conduction electrons and a single spin wave (SW) coherently excited within a metallicExpand
Auto- versus Cross-Correlation Noise in Periodically Driven Quantum Coherent Conductors
Analysis of shot noise in terms of these contributions allows us to predict that no individual traveling particles with a real wave function, such as Majorana fermions, can be created in the Fermi sea in a clean manner, that is, without accompanying electron–hole pairs. Expand
Simulating time-dependent thermoelectric transport in quantum systems
We put forward a gauge-invariant theoretical framework for studying time-resolved thermoelectric transport in an arbitrary multiterminal electronic quantum system described by a noninteractingExpand
Tkwant: a software package for time-dependent quantum transport
Tkwant is a Python package for the simulation of quantum nanoelectronics devices to which external time-dependent perturbations are applied. Tkwant is an extension of the kwant packageExpand
Magnon driven chiral charge and spin pumping and electron-magnon scattering from time-dependent-quantum-transport/classical-micromagnetics framework
Using newly developed time-dependent-quantum-transport/classical-micromagnetics framework, we investigate interaction between conduction electrons and a single spin wave (SW) coherently excitedExpand


Dynamical control of interference using voltage pulses in the quantum regime.
It is shown that extremely fast pulses provide a conceptually new tool for manipulating quantum information: the possibility to dynamically engineer the interference pattern of a quantum system. Expand
Numerical simulations of time-resolved quantum electronics
Abstract Numerical simulation has become a major tool in quantum electronics both for fundamental and applied purposes. While for a long time those simulations focused on stationary properties (e.g.Expand
Minimal excitation states of electrons in one-dimensional wires.
It is shown that by using quantized pulses of simple form one can suppress the particle-hole pairs which are created by a generic excitation, and a method of their detection which relies on noise measurement. Expand
Shot noise in mesoscopic conductors
Abstract Theoretical and experimental work concerned with dynamic fluctuations has developed into a very active and fascinating subfield of mesoscopic physics. We present a review of this developmentExpand
Electron counting statistics and coherent states of electric current
A theory of electron counting statistics in quantum transport is presented. It involves an idealized scheme of current measurement using a spin 1/2 coupled to the current so that it precesses at theExpand
Landauer formula for the current through an interacting electron region.
A Landauer formula for the current through a region of interacting electrons is derived using the nonequilibrium Keldysh formalism, and an enhanced conductance is predicted for tunneling through a quantum dot in the fractional quantum Hall regime. Expand
Minimal-excitation states for electron quantum optics using levitons
It is reported that such quasiparticles (hereafter termed levitons) can be generated on demand in a conductor by applying voltage pulses to a contact, and identified in the energy domain with shot-noise spectroscopy and in the time domain with electronic Hong–Ou–Mandel noise correlations. Expand
Kwant: a software package for quantum transport
Kwant is a Python package for numerical quantum transport calculations. It aims to be a user-friendly, universal, and high-performance toolbox for the simulation of physical systems of anyExpand
Dynamic conductance and the scattering matrix of small conductors.
The current response to oscillating electric or magnetic fields acting on the carriers in the probes of a multichannel, multilead conductor is investigated and a self-consistent potential method is used to include Coulomb interactions. Expand
Time-dependent current partition in mesoscopic conductors
SummaryThe currents at the terminals of a mesoscopic conductor are evaluated in the presence of slowly oscillating potentials applied to the contacts of the sample. The need to find a charge- andExpand