In-flight detection of few electrons using a singlet-triplet spin qubit
arXiv:2210.08831 · doi:10.1103/PhysRevResearch.4.043116
Abstract
We investigate experimentally the capacitive coupling between a two-electron singlet-triplet spin qubit and flying electrons propagating in quantum Hall edge channels. After calibration of the spin qubit detector, we assess its charge sensibility and demonstrate experimentally the detection of less than five flying electrons with average measurement. This experiment demonstrates that the spin qubit is an ultrasensitive and fast charge detector with the perspective of a future single shot-detection of a single flying electron. This work opens the route toward quantum electron optics experiments at the single electron level in semiconductor circuits.
References in corpus (31)
- An Electronic Mach-Zehnder Interferometer
- Quantum jumps of light recording the birth and death of a photon in a cavity
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
- Phonon-mediated quantum state transfer and remote qubit entanglement
- Fast Single-Charge Sensing with an rf Quantum Point Contact
- Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
- Noise suppression using symmetric exchange gates in spin qubits
- 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
- Electron quantum optics : partitioning electrons one by one
- Clock-controlled emission of single-electron wavepackets in a solid-state circuit
- Fractionalized Wave Packets from an Artificial Tomonaga-Luttinger Liquid
- Electrical control of a solid-state flying qubit
- Hong-Ou-Mandel experiment for temporal investigation of single electron fractionalization
- Experimental signature of phonon-mediated spin relaxation
- Partitioning of on-demand electron pairs
- Waveform measurement of charge- and spin-density wave packets in a Tomonaga-Luttinger liquid
- Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact
- Quantum manipulation of two-electron spin states in metastable double quantum dots
- Rapid high-fidelity spin state readout in Si/SiGe quantum dots via radio-frequency reflectometry
- Quantum Computation with Ballistic Electrons
- Sound-driven single-electron transfer in a circuit of coupled quantum rails
- Coherence oscillations in dephasing by non-Gaussian shot noise
- Unveiling the bosonic nature of an ultrashort few-electron pulse
- Transmission Phase in the Kondo Regime Revealed in a Two-Path Interferometer
- Effect of Disorder on the Quantum Coherence in Mesoscopic Wires
- Trapping and counting ballistic non-equilibrium electrons
- Non-universal transmission phase behaviour of a large quantum dot
- Measurement of the Transmission Phase of an Electron in a Quantum Two-Path Interferometer