Spectroscopy of Quantum-Dot Orbitals with In-Plane Magnetic Fields
arXiv:1804.00162 · doi:10.1103/PhysRevLett.122.207701
Abstract
We show that in-plane-magnetic-field assisted spectroscopy allows extraction of the in-plane orientation and full 3D shape of the quantum mechanical orbitals of a single electron GaAs lateral quantum dot with sub-nm precision. The method is based on measuring orbital energies in a magnetic field with various strengths and orientations in the plane of the 2D electron gas. As a result, we deduce the microscopic quantum dot confinement potential landscape, and quantify the degree by which it differs from a harmonic oscillator potential. The spectroscopy is used to validate shape manipulation with gate voltages, agreeing with expectations from the gate layout. Our measurements demonstrate a versatile tool for quantum dots with one dominant axis of strong confinement.
4 pages, 3 color figures, including supplementary on arXiv
References in corpus (34)
- Quantum Computation with Quantum Dots
- Spins in few-electron quantum dots
- Coherent control of a single electron spin with electric fields
- Electrically driven single electron spin resonance in a slanting Zeeman field
- Phonon-induced decay of the electron spin in quantum dots
- Coherent Branched Flow in a Two-Dimensional Electron Gas
- Prospects for Spin-Based Quantum Computing
- Zeeman energy and spin relaxation in a one-electron quantum dot
- Electrical control of spin relaxation in a quantum dot
- Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot
- Quantum dot self consistent electronic structure and the Coulomb blockade
- Hyperfine-mediated transitions between a Zeeman split doublet in GaAs quantum dots: The role of the internal field
- Spatially resolved manipulation of single electrons in quantum dots using a scanned probe
- Counting statistics and super-Poissonian noise in a quantum dot
- Transient current spectroscopy of a quantum dot in the Coulomb blockade regime
- Excited-state spectroscopy on a nearly-closed quantum dot via charge detection
- Hyperfine-phonon spin relaxation in a single-electron GaAs quantum dot
- Energy Dependent Tunneling in a Quantum Dot
- GaAs Quantum Dot Thermometry Using Direct Transport and Charge Sensing
- Spin filling and orbital structure of the first six holes in a silicon metal-oxide-semiconductor quantum dot
- Spin relaxation anisotropy in a GaAs quantum dot
- Silver-Epoxy Microwave Filters and Thermalizers for Millikelvin Experiments
- Spin-Dependent Tunneling of Single Electrons into an Empty Quantum Dot
- Metallic Coulomb Blockade Thermometry down to 10 mK and below
- Latched Detection of Excited States in an Isolated Double Quantum Dot
- Orbital Effects of In-Plane Magnetic Fields Probed by Mesoscopic Conductance Fluctuations
- Orbital effect of in-plane magnetic field on quantum transport in chaotic lateral dots
- Control of electron spin and orbital resonance in quantum dots through spin-orbit interactions
- Optimal geometry of lateral GaAs and Si/SiGe quantum dots for electrical control of spin qubits
- Orbital effects of a strong in-plane magnetic field on a gate-defined quantum dot
- Conductance Fluctuations and Spin Symmetries in Quantum Dots
- G-factor of electrons in gate-defined quantum dots in a strong in-plane magnetic field
- Intrinsic Metastabilities in the Charge Configuration of a Double Quantum Dot
- Spin-dependent tunneling into an empty lateral quantum dot
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