Coherent interaction of a-few-electron quantum dot with a terahertz optical resonator
arXiv:2204.10522 · doi:10.1103/PhysRevLett.132.066901
Abstract
We have investigated light-matter hybrid excitations in a quantum dot (QD)-terahertz (THz) optical resonator coupled system. We fabricate a gate-defined QD in the vicinity of a THz split-ring resonator (SRR) by using a AlGaAs/GaAs two-dimensional electron system (2DES). By illuminating the system with THz radiation, the QD shows a current change whose spectrum exhibits coherent coupling between the electrons in the QD and the SRR as well as coupling between the 2DES and the SRR. The latter coupling enters the ultrastrong coupling regime and the coupling between the QD and the SRR is also very close to the ultrastrong coupling regime, despite the fact that only a few electrons reside in the QD.
References in corpus (26)
- Spins in few-electron quantum dots
- Quantum nature of a strongly-coupled single quantum dot-cavity system
- Exciton photon strong-coupling regime for a single quantum dot in a microcavity
- Semiconductor Spin Qubits
- Ultrastrong coupling of the cyclotron transition of a two-dimensional electron gas to a THz metamaterial
- Circuit Quantum Electrodynamics with a Spin Qubit
- Ultra-Strong Light-Matter Coupling Regime with Polariton Dots
- Strong Coupling of a Single Electron in Silicon to a Microwave Photon
- Cavity-mediated electron-photon superconductivity
- Coherent spin-qubit photon coupling
- Breakdown of the topological protection by cavity vacuum fields in the integer quantum Hall effect
- Magneto-transport controlled by Landau polariton states
- Review of performance metrics of spin qubits in gated semiconducting nanostructures
- Quantum Electrodynamic Control of Matter: Cavity-Enhanced Ferroelectric Phase Transition
- Coherent spin-spin coupling mediated by virtual microwave photons
- Microwave response of a two-dimensional electron stripe
- In situ reduction of charge noise in GaAs/AlGaAs Schottky-gated devices
- Ultra-Strong Light-Matter Coupling in Deeply Subwavelength THz LC resonators
- Vacuum-dressed cavity magnetotransport of a 2D electron gas
- Single photoelectron spin detection and angular momentum transfer in a gate defined quantum dot
- In-situ Tuning of the Electric Dipole Strength of a Double Dot Charge Qubit: Charge Noise Protection and Ultra Strong Coupling
- An ultrastrongly coupled single THz meta-atom
- Influence of contacts on the microwave response of a two-dimensional electron stripe
- Quantized Dispersion of Two-Dimensional Magnetoplasmons Detected by Photoconductivity Spectroscopy
- Quantum state transfer of angular momentum via single electron photo-excitation from a Zeeman-resolved light hole
- Cavity-mediated electron hopping in disordered quantum Hall systems
Cited by in corpus (6)
- Electron conductance and many-body marker of a cavity-embedded topological 1D chain
- Quantum phase transitions and cat states in cavity-coupled quantum dots
- Cavity-modified quantum electron transport in multi-terminal devices and interferometers
- Ultrastrong light-matter coupling in near-field coupled split-ring resonators revealed by photocurrent spectroscopy
- Gate-tunable single terahertz meta-atom ultrastrong light-matter coupling
- Nonlinear Terahertz Electroluminescence from Dirac Landau Polaritons