Negative currents in Fabry-Pérot cavities are caused by interfering paths
arXiv:2503.13144 · doi:10.1103/36rq-15v7
Abstract
It has been predicted that the time-dependent current in a Fabry-Pérot cavity can turn negative even if the applied voltage pulses are always positive. It has also been suggested that the negative currents are related to interfering paths, however, an analytic description of this surprising phenomenon has so far been missing. Here we make use of Floquet scattering theory to demonstrate that the negative currents indeed are caused by the interference of scattering paths through the cavity with different numbers of roundtrips. Our analytic result can be tested in future experiments as it predicts exactly how the effect should be washed out by an increasing temperature. We show that a similar phenomenon is expected for the heat current, which may also turn negative.
arXiv comment6 pages, 4 figures
References in corpus (29)
- Electron Counting Statistics and Coherent States of Electric Current
- Quantum Thermodynamics
- An Electronic Mach-Zehnder Interferometer
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Bipartite Fluctuations as a Probe of Many-Body Entanglement
- Coherent control of single electrons: a review of current progress
- Minimal excitation states of electrons in one-dimensional wires
- Electron quantum optics in ballistic chiral conductors
- Coherent States of Alternating Current,
- The Role of Interactions in an Electronic Fabry-Perot Interferometer Operating in the Quantum Hall Effect Regime
- Integer and fractional charge Lorentzian voltage pulses analyzed in the frame of Photon-assisted Shot Noise
- Scattering matrix approach to the description of quantum electron transport
- Numerical simulations of time resolved quantum electronics
- Floquet scattering theory for current and heat noise in large amplitude adiabatic pumps
- Dynamical control of interference using voltage pulses in the quantum regime
- Negative Full Counting Statistics Arise From Interference Effects
- Unveiling the bosonic nature of an ultrashort few-electron pulse
- First-order correlation function of the stream of single-electron wave-packets
- Coulomb-mediated antibunching of an electron pair surfing on sound
- Two electrons interacting at a mesoscopic beam splitter
- Emission and Coherent Control of Levitons in Graphene
- Heat and charge transport measurements to access single-electron quantum characteristics
- Time-Domain Spectroscopy of Mesoscopic Conductors Using Voltage Pulses
- Multi-particle interference in an electronic Mach-Zehnder interferometer
- Time-resolved sensing of electromagnetic fields with single-electron interferometry
- Coherent Transport in Periodically Driven Mesoscopic Conductors: From Scattering Matrices to Quantum Thermodynamics
- Ultrashort electron wavepackets via frequency-comb synthesis
- Time resolved heat exchange in driven quantum systems
- Wigner representation of Andreev-reflected charge pulses