Periodic source of energy-entangled electrons in helical states coupled to a BCS superconductor
arXiv:2409.06591 · doi:10.1103/PhysRevB.110.245410
Abstract
We propose a source of purely electronic energy-entangled states implemented in a solid-state system with potential applications in quantum information protocols based on electron flying qubits. The proposed device relies on the standard tools of Electron Quantum Optics (EQO) and exploits entanglement of the Cooper pairs of a BCS superconductor. The latter is coupled via an adjustable quantum point contact to two opposite spin polarized electron wave-guides, which are driven by trains of Lorentzian pulses. This specific choice for the drive is crucial to inject purely electronic entangled-states devoid of spurious electron-hole pairs. In the Andreev regime, a perturbative calculation in the tunnel coupling confirms that entangled electrons states (EES) are generated at the output of the normal side. We introduce a quantity related to charge current cross-correlations which allows one to verify experimentally the entangled nature of the emitted state.
arXiv comment19 pages, 5 figures, comments are welcomed ! Final version published in Physical Review B
References in corpus (68)
- Topological insulators and superconductors
- Quantum Spin Hall Effect in Graphene
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Topological Order and the Quantum Spin Hall Effect
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Theoretical efficient high capacity Quantum Key Distribution Scheme
- Electron Counting Statistics and Coherent States of Electric Current
- Quantum entanglement in condensed matter systems
- An On-Demand Coherent Single Electron Source
- Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
- Single-electron current sources: towards a refined definition of ampere
- 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
- Orbital entanglement and violation of Bell inequalities in mesoscopic conductors
- Bell inequalities and entanglement in solid state devices
- Minimal excitation states of electrons in one-dimensional wires
- Electron quantum optics in ballistic chiral conductors
- Coherent States of Alternating Current,
- Electron quantum optics : partitioning electrons one by one
- Current correlations of an on-demand electron source as an evidence of single particle emission
- Single electron quantum tomography in quantum Hall edge channels
- Scattering matrix approach to the description of quantum electron transport
- Current noise spectrum of a single particle emitter: theory and experiment
- Universal Quantum Computing with Measurement-Induced Continuous-Variable Gate Sequence in a Loop-Based Architecture
- Electron quantum optics in quantum Hall edge channels
- Real time decoherence of Landau and Levitov quasi-particles in quantum Hall edge channels
- Minimal excitations in the fractional quantum Hall regime
- Current and noise correlations in a double dot Cooper pair beam splitter
- Spin current shot noise as a probe of interactions in mesoscopic systems
- Levitons for electron quantum optics
- Electron quantum optics as quantum signal processing
- Sound-driven single-electron transfer in a circuit of coupled quantum rails
- Decoherence and relaxation of a single electron in a one dimensional conductor
- Interference induced thermoelectric switching and heat rectification in quantum Hall junctions
- Current correlations in the interacting Cooper-pair beam-splitter
- Effective charges and statistical signatures in the noise of normal metal--superconductor junctions at arbitrary bias
- Unveiling the bosonic nature of an ultrashort few-electron pulse
- Crystallization of Levitons in the fractional quantum Hall regime
- Dynamical generation and detection of entanglement in neutral leviton pairs
- Minimal excitation states for heat transport in driven quantum Hall systems
- Spin-thermoelectric transport induced by interactions and spin-flip processes in two dimensional topological insulators
- Spin noise and Bell inequalities in a realistic superconductor-quantum dot entangler
- Hong-Ou-Mandel characterization of multiply charged Levitons
- Coulomb-mediated antibunching of an electron pair surfing on sound
- Half-levitons -- zero-energy excitations of a driven Fermi sea
- Energy entanglement in normal metal-superconducting forks
- Two electrons interacting at a mesoscopic beam splitter
- Hybrid superconductor-semiconductor systems for quantum technology
- Polarized heat current generated by quantum pumping in two-dimensional topological insulators
- Emission and Coherent Control of Levitons in Graphene
- Generation of a single-cycle acoustic pulse: a scalable solution for transport in single-electron circuits
- Levitons in superconducting point contacts
- Hong-Ou-Mandel heat noise in the quantum Hall regime
- On-demand entanglement generation using dynamic single-electron sources
- Processing quantum signals carried by electrical currents
- Levitons in helical liquids with Rashba spin-orbit coupling probed by a superconducting contact
- High-temperature fusion of a multi-electron leviton
- Microscopic theory of photo-assisted electronic transport in normal-metal/BCS-superconductor junctions
- Theory of non-equilibrium noise in general multi-terminal superconducting hydrid devices: application to multiple Cooper pair resonances
- Photoassisted shot noise spectroscopy at fractional filling factor
- Ultrashort electron wavepackets via frequency-comb synthesis
- Properties of Mesoscopic Hybrid Superconducting Systems
- Measuring statistics-induced entanglement entropy with a Hong-Ou-Mandel interferometer
- Three Mach Zehnder Interferometers Setup for Production and Observation of GHZ-entanglement of Electrons
- Current and shot noise in a normal metal-superconductor junction driven by spin-dependent periodic pulse sequence
- Levitons in correlated nano-scale systems
- Correlated two-Leviton states in the fractional quantum Hall regime