Tkwant: a software package for time-dependent quantum transport

  title={Tkwant: a software package for time-dependent quantum transport},
  author={T. Kloss and J. Weston and B. Gaury and B. Rossignol and C. Groth and X. Waintal},
  journal={New Journal of Physics},
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 package ( and can handle the same types of systems: discrete tight-binding-like models that consist of an arbitrary central region connected to semi-infinite electrodes. The problem is genuinely many-body even in the absence of interactions and is treated within the non-equilibrium Keldysh… Expand
1 Citations
Spin-orbit coupling induced ultra-high harmonic generation from magnetic dynamics
The recent boost in data transfer rates puts a daring strain on information technology. Sustaining such a growth rate requires the development of sources, detectors and systems working in theExpand


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
Linear-scaling source-sink algorithm for simulating time-resolved quantum transport and superconductivity
We report on a "source-sink" algorithm which allows one to calculate time-resolved physical quantities from a general nanoelectronic quantum system (described by an arbitrary time-dependent quadraticExpand
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 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
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
Time-dependent transport in interacting and noninteracting resonant-tunneling systems.
Analytical and numerical results for the exactly solvable noninteracting resonant-tunneling system are presented, and a connection to recent linear-response calculations, and to earlier studies of electron-phonon scattering effects in resonant tunneling is established. Expand
Unveiling the bosonic nature of an ultrashort few-electron pulse
Time-of-flight measurements of ultrashort few-electron charge pulses injected into a quasi one-dimensional quantum conductor are reported on to demonstrate a powerful probe for directly investigating real-time dynamics of fractionalisation phenomena in low-dimensional conductors. Expand
Photoassisted shot noise spectroscopy at fractional filling factor
We study the photoassisted shot noise generated by a periodic voltage in the fractional quantum Hall regime. Fluctuations of the current are due to the presence of a quantum point contact operatingExpand
QuTiP 2: A Python framework for the dynamics of open quantum systems
Abstract We present version 2 of QuTiP, the Quantum Toolbox in Python. Compared to the preceding version [J.R. Johansson, P.D. Nation, F. Nori, Comput. Phys. Commun. 183 (2012) 1760.], we haveExpand
Stopping electrons with radio-frequency pulses in the quantum Hall regime
Most functionalities of modern electronic circuits rely on the possibility to modify the path fol- lowed by the electrons using, e.g. field effect transistors. Here we discuss the interplay betweenExpand