Quantum tomography of electrical currents
arXiv:2003.10748 · doi:10.1038/s41467-019-11369-5
Abstract
In quantum nanoelectronics, time-dependent electrical currents are built from few elementary excitations emitted with well-defined wavefunctions. However, despite the realization of sources generating quantized numbers of excitations, and despite the development of the theoretical framework of time-dependent quantum electronics, extracting electron and hole wavefunctions from electrical currents has so far remained out of reach, both at the theoretical and experimental levels. In this work, we demonstrate a quantum tomography protocol which extracts the generated electron and hole wavefunctions and their emission probabilities from any electrical current. It combines two-particle interferometry with signal processing. Using our technique, we extract the wavefunctions generated by trains of Lorentzian pulses carrying one or two electrons. By demonstrating the synthesis and complete characterization of electronic wavefunctions in conductors, this work offers perspectives for quantum information processing with electrical currents and for investigating basic quantum physics in many-body systems.
arXiv commentPreprint version, supplementary material is available at https://static-content.springer.com/esm/art%3A10.1038%2Fs41467-019-11369-5/MediaObjects/41467_2019_11369_MOESM1_ESM.pdf
References in corpus (44)
- Maximally localized Wannier functions: Theory and applications
- Continuous-variable optical quantum state tomography
- Electron Counting Statistics and Coherent States of Electric Current
- An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
- An On-Demand Coherent Single Electron Source
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Minimal excitation states of electrons in one-dimensional wires
- Non-Equilibrium Edge Channel Spectroscopy in the Integer Quantum Hall Regime
- Electron quantum optics in ballistic chiral conductors
- Preparation and coherent manipulation of pure quantum states of a single molecular ion
- Clock-controlled emission of single-electron wavepackets in a solid-state circuit
- Electrical control of a solid-state flying qubit
- Hong-Ou-Mandel experiment for temporal investigation of single electron fractionalization
- Single electron quantum tomography in quantum Hall edge channels
- Shot noise of a mesoscopic two-particle collider
- Joint Image Restoration and Segmentation using Gauss-Markov-Potts Prior Models and Variational Bayesian Computation: Technical Details
- Quantum partition noise of photo-created electron-hole pairs
- Interactions and charge fractionalization in an electronic Hong-Ou-Mandel interferometer
- Wigner function approach to single electron coherence in quantum Hall edge channels
- Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum-Hall Edge States
- Fractionalization of minimal excitations in integer quantum Hall edge channels
- Photon-assisted electron-hole shot noise in multi-terminal conductors
- Generation of energy selective excitations in quantum Hall edge states
- Electron quantum optics as quantum signal processing
- Elementary events of electron transfer in a voltage-driven quantum point contact
- Electron and hole Hong-Ou-Mandel interferometry
- Decoherence and relaxation of a single electron in a one dimensional conductor
- Dynamical control of interference using voltage pulses in the quantum regime
- Glauber coherence of single electron sources
- Unveiling the bosonic nature of an ultrashort few-electron pulse
- Hong-Ou-Mandel characterization of multiply charged Levitons
- Quantum optics theory of electronic noise in coherent conductors
- First-order correlation function of the stream of single-electron wave-packets
- Taming electronic decoherence in 1D chiral ballistic quantum conductors
- Shaping charge excitations in chiral edge states with a time-dependent gate voltage
- Two-particle interferometry in quantum Hall edge channels
- Electron and electron-hole quasiparticle states in a driven quantum contact
- On-demand entanglement generation using dynamic single-electron sources
- Minimal-excitation single-particle emitters: A comparison of charge and energy transport properties
- Discrete photon statistics from continuous microwave measurements
- Classical-to-quantum crossover in electron on-demand emission
- Two-electron coherence and its measurement in electron quantum optics
- Time-Domain Spectroscopy of Mesoscopic Conductors Using Voltage Pulses
- Single-particle emission at finite temperatures
Cited by in corpus (20)
- Two-photon interference: the Hong-Ou-Mandel effect
- Sound-driven single-electron transfer in a circuit of coupled quantum rails
- Continuous-Variable Tomography of Solitary Electrons
- Relaxation and revival of quasiparticles injected in an interacting quantum Hall liquid
- Two electrons interacting at a mesoscopic beam splitter
- Fluctuation dissipation relations for strongly correlated out-of-equilibrium circuits
- Spatial and energy resolution of electronic states by shot noise
- Processing quantum signals carried by electrical currents
- Coherent beam splitting of flying electrons driven by a surface acoustic wave
- Time-energy filtering of single electrons in ballistic waveguides
- Multi-particle interference in an electronic Mach-Zehnder interferometer
- Ultrashort electron wavepackets via frequency-comb synthesis
- Spectral properties of interacting helical channels driven by Lorentzian pulses
- Collision of two interacting electrons on a mesoscopic beamsplitter: exact solution in the classical limit
- Entanglement of Nambu Spinors and Bell Inequality Test Without Beam Splitters
- AC driven strongly correlated quantum circuits and Hall edge states: Unified photo-assisted noise and revisited minimal excitations
- Quantum Process Tomography of Unitary Maps from Time-Delayed Measurements
- Quasiparticles states for integer- and fractional-charged electron wave packets
- Non-classical current noise and light emission of an ac-driven tunnel junction
- Auto- versus cross-correlation noise