Time-resolved sensing of electromagnetic fields with single-electron interferometry
arXiv:2408.12903 · doi:10.1038/s41565-025-01888-2
Abstract
Characterizing quantum states of the electromagnetic field at microwave frequencies requires fast and sensitive detectors that can simultaneously probe the field time-dependent amplitude and its quantum fluctuations. In this work, we demonstrate a quantum sensor that exploits the phase of a single electron wavefunction, measured in an electronic Fabry-Perot interferometer, to detect a classical time-dependent electric field. The time resolution, limited by the temporal width of the electronic wavepacket, is a few tens of picoseconds. The interferometry technique provides a voltage resolution of a few tens of microvolts, corresponding to a few microwave photons. Importantly, our detector simultaneously probes the amplitude of the field from the phase of the measured interference pattern and its fluctuations from the interference contrast. This capability paves the way for on-chip detection of quantum radiation, such as squeezed or Fock states.
Main (8 pages and 3 figures) and supplementary files (17 pages and 12 figures)
References in corpus (32)
- An Electronic Mach-Zehnder Interferometer
- An On-Demand Coherent Single Electron Source
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Electrons surfing on a sound wave as a platform for quantum optics with flying electrons
- Coherent control of single electrons: a review of current progress
- Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
- Electron quantum optics in ballistic chiral conductors
- Theory of the Fabry-Perot Quantum Hall Interferometer
- The Role of Interactions in an Electronic Fabry-Perot Interferometer Operating in the Quantum Hall Effect Regime
- Clock-controlled emission of single-electron wavepackets in a solid-state circuit
- Electrical control of a solid-state flying qubit
- Single electron quantum tomography in quantum Hall edge channels
- Shot noise of a mesoscopic two-particle collider
- Partitioning of on-demand electron pairs
- Edge-State Velocity and Coherence in a Quantum Hall Fabry-Perot Interferometer
- Aharonov Bohm Effect in Graphene Fabry Pérot Quantum Hall Interferometers
- Two-particle non-local Aharonov-Bohm effect from two single-particle emitters
- Coherence of Single Electron Sources from Mach-Zehnder Interferometry
- A tunable Fabry-Pérot quantum Hall interferometer in graphene
- Generation of energy selective excitations in quantum Hall edge states
- Continuous-Variable Tomography of Solitary Electrons
- Dynamical generation and detection of entanglement in neutral leviton pairs
- Observation of Squeezing in the Electron Quantum Shot Noise of a Tunnel Junction
- Ultrafast Voltage Sampling using Single-Electron Wavepackets
- Observation of Interaction-Induced Modulations of a Quantum Hall Liquid's Area
- Emission and Coherent Control of Levitons in Graphene
- Processing quantum signals carried by electrical currents
- Two-electron coherence and its measurement in electron quantum optics
- AC driven strongly correlated quantum circuits and Hall edge states: Unified photo-assisted noise and revisited minimal excitations
- Observation of edge magnetoplasmon squeezing in a quantum Hall conductor
- Quantum sensing of time dependent electromagnetic fields with single electron excitations
- Electronic interferometry with ultrashort plasmonic pulses
Cited by in corpus (6)
- Quantum transport phenomena induced by time-dependent fields
- Propagation of ultrashort voltage pulses through a small quantum dot
- Eigenstate control of plasmon wavepackets with electron-channel blockade
- Negative currents in Fabry-Pérot cavities are caused by interfering paths
- The temporal resolution limit in quantum sensing
- Method for rapid estimation of the energy-time covariance matrix of single electrons