Observation of extremely slow hole spin relaxation in self-assembled quantum dots

Abstract

We report the measurement of extremely slow hole spin relaxation dynamics in small ensembles of self-assembled InGaAs quantum dots. Individual spin orientated holes are optically created in the lowest orbital state of each dot and read out after a defined storage time using spin memory devices. The resulting luminescence signal exhibits a pronounced polarization memory effect that vanishes for long storage times. The hole spin relaxation dynamics are measured as a function of external magnetic field and lattice temperature. We show that hole spin relaxation can occur over remarkably long timescales in strongly confined quantum dots (up to ~270 us), as predicted by recent theory. Our findings are supported by calculations that reproduce both the observed magnetic field and temperature dependencies. The results suggest that hole spin relaxation in strongly confined quantum dots is due to spin orbit mediated phonon scattering between Zeeman levels, in marked contrast to higher dimensional nanostructures where it is limited by valence band mixing.

Published by Physical Review B

References in corpus (11)

• Quantum Computation with Quantum Dots
• Driven coherent oscillations of a single electron spin in a quantum dot
• Spin-flip transitions between Zeeman sublevels in semiconductor quantum dots
• Phonon-induced decay of the electron spin in quantum dots
• Spin relaxation and decoherence of holes in quantum dots
• Electric Dipole Spin Resonance for Heavy Holes in Quantum Dots
• Nuclear spin state narrowing via gate--controlled Rabi oscillations in a double quantum dot
• Enhancement of electron spin coherence by optical preparation of nuclear spins
• Hole spin relaxation in semiconductor quantum dots
• Accuracy of circular polarization as a measure of spin polarization in quantum dot qubits
• Measurement, control, and decay of quantum-dot spins

Cited by in corpus (105)

• Semiconductor Spin Qubits
• Spin dynamics in semiconductors
• Prospects for Spin-Based Quantum Computing
• The germanium quantum information route
• Nuclear spin physics in quantum dots: an optical investigation
• Double quantum dot with integrated charge sensor based on Ge/Si heterostructure nanowires
• Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
• Coherent control and suppressed nuclear feedback of a single quantum dot hole qubit
• The entanglement beam splitter: a quantum-dot spin in a double-sided optical microcavity
• Strong Spin-Orbit Interaction and Helical Hole States in Ge/Si Nanowires
• Decoherence in Solid State Qubits
• Complete hyperentangled-Bell-state analysis for photon systems assisted by quantum-dot spins in optical microcavities
• Loss-resistant state teleportation and entanglement swapping using a quantum-dot spin in an optical microcavity
• Hole - Nuclear Spin Interaction in Quantum Dots
• Optical control of one and two hole spins in interacting quantum dots
• Hole spin dephasing time associated to hyperfine interaction in quantum dots
• Fast optical preparation, control and read-out of single quantum dot spin
• Universal quantum gates for hybrid systems assisted by quantum dots inside double-sided optical microcavities
• Direct Rashba spin-orbit interaction in Si and Ge nanowires with different growth directions
• Circuit QED with Hole-Spin Qubits in Ge/Si Nanowire Quantum Dots
• Coherent optical control of the spin of a single hole in a quantum dot
• Direct measurement of the hole-nuclear spin interaction in single quantum dots
• Pauli Spin Blockade of Heavy Holes in a Silicon Double Quantum Dot
• Scalable photonic quantum computing assisted by quantum-dot spin in double-sided optical microcavity
• Intrinsic spin fluctuations reveal the dynamical response function of holes coupled to nuclear spin baths in (In,Ga)As quantum dots
• Isotope sensitive measurement of the hole-nuclear spin interaction in quantum dots
• Photonic spatial Bell-state analysis for robust quantum secure direct communication using quantum dot-cavity systems
• Error-detected generation and complete analysis of hyperentangled Bell states for photons assisted by quantum-dot spins in double-sided optical microcavities
• Hybridization and spin decoherence in heavy-hole quantum dots
• Strong coupling of optical nanoantennas and atomic systems
• Relaxation of hole spins in quantum dots via two-phonon processes
• Optical Spin Noise of a Single Hole Spin Localized in an (InGa)As Quantum Dot
• Scalable qubit architecture based on holes in quantum dot molecules
• Pumping of nuclear spins by the optical solid effect in a quantum dot
• Tunable g factor and phonon-mediated hole spin relaxation in Ge/Si nanowire quantum dots
• Hole Spin Mixing in InAs Quantum Dot Molecules
• Spin interactions, relaxation and decoherence in quantum dots
• Role of Nuclear Quadrupole Coupling on Decoherence and Relaxation of Central Spins in Quantum Dots
• Single-shot readout of hole spins in Ge
• A semiconductor photon-sorter
• Spin Orbit Mediated Manipulation of Heavy Hole Spin Qubit in Gated Semiconductor Nanodevices
• Prediction of large linear-in-k spin splitting for holes in the 2D GaAs/AlAs system
• Engineering ultralong spin coherence in two-dimensional hole systems at low temperatures
• Landau-Zener-Stuckelberg-Majorana interferometry of a single hole
• High resolution coherent population trapping on a single hole spin in a semiconductor
• First-principles hyperfine tensors for electrons and holes in GaAs and silicon
• SiGe quantum dots for fast hole spin Rabi oscillations
• Electrically-tunable hole g-factor of an optically-active quantum dot for fast spin rotations
• Fast preparation of single hole spin in InAs/GaAs quantum dot in Voigt geometry magnetic field
• Electric-field Manipulation of the Lande' g Tensor of Holes in In0.5Ga0.5As/GaAs Self-assembled Quantum Dots
• Quantum control of hole spin qubits in double quantum dots
• Spin Inertia of Resident and Photoexcited Carriers in Singly-Charged Quantum Dots
• Light-hole Exciton in Nanowire Quantum Dot
• Controlling the Interaction of Electron and Nuclear Spins in a Tunnel-Coupled Quantum Dot
• Fast high fidelity hole spin initialization in a single InGaAs quantum dot
• All optical quantum control of a spin-quantum state and ultrafast transduction into an electric current
• Strong Hyperfine-Induced Modulation of an Optically-Driven Hole Spin in an InAs Quantum Dot
• Temperature dependence of hole spin coherence in (In,Ga)As quantum dots measured by mode-locking and echo techniques
• Hole-phonon interactions in quantum dots: Effects of phonon confinement and encapsulation materials on spin-orbit qubits
• Transport studies of electron-hole and spin-orbit interaction in GaSb/InAsSb core-shell nanowire quantum dots
• Electric g Tensor Control and Spin Echo of a Hole-Spin Qubit in a Quantum Dot Molecule
• Decoherence-assisted initialization of a resident hole spin polarization in a two-dimensional hole gas
• Deterministic Coherent Writing of a Long-Lived Semiconductor Spin Qubit Using One Ultrafast Optical Pulse
• Hysteretic magnetoresistance and thermal bistability in a magnetic two-dimensional hole system
• Phonon-assisted relaxation between hole states in quantum dot molecules
• Charge-noise induced dephasing in silicon hole-spin qubits
• Effect of strain on hyperfine-induced hole-spin decoherence in quantum dots
• Anisotropic Fermi Contour of (001) GaAs Holes in Parallel Magnetic Fields
• Spin-orbit induced hole spin relaxation in InAs and GaAs quantum dots
• Selective Optical Charge Generation, Storage and Readout in a Single Self Assembled Quantum Dot
• Error-heralded generation and self-assisted complete analysis of two-photon hyperentangled Bell states assisted by single-sided quantum-dot-cavity systems
• All electrically controlled quantum gates for single heavy hole spin qubits
• Hyperfine interaction mediated exciton spin relaxation in (In,Ga)As quantum dots
• Controllable photonic time-bin qubits from a quantum dot
• The origin of gate hysteresis in p-type Si-doped AlGaAs/GaAs heterostructures
• Laser spectroscopy of individual quantum dots charged with a single hole
• Atomistic theory of spin relaxation in self-assembled In${}_{1-x}$Ga${}_x$As/GaAs quantum dots at zero magnetic field
• Hole spin-flip transitions in a self-assembled quantum dot
• Theory of the time-resolved Kerr rotation on trapped holes
• Symmetry induced hole-spin mixing in quantum dot molecules
• Multi-dimensional photonic states from a quantum dot
• Optical polarization of localized hole spins in p-doped quantum wells
• Optical spin control and coherence properties of acceptor bound holes in strained GaAs
• Optical rotation of heavy hole spins by non-Abelian geometrical means
• Slow Exciton Spin Relaxation in Single Self-Assembled In${}_{1-x}$Ga${}_x$As/GaAs Quantum Dots
• Asymmetric $g$ tensor in low-symmetry two-dimensional hole systems
• Coplanar stripline antenna design for optically detected magnetic resonance on semiconductor quantum dots
• Homogeneous Linewidth Narrowing of the Charged Exciton via Nuclear Spin Screening in an InAs/GaAs Quantum Dot Ensemble
• Optical study of lithographically defined, subwavelength plasmonic wires and their coupling to embedded quantum emitters
• Hole-capture competition between a single quantum dot and an ionized acceptor
• Polarization memory in single Quantum Dots
• Spin-orbit coupling and spin relaxation of hole states in [001]- and [111]-orientedquantum dots of various geometry
• Berry-phase induced entanglement of hole-spin qubits in a microwave cavity
• Spin dynamics in p-doped semiconductor nanostructures subject to a magnetic field tilted from the Voigt geometry
• Tuning of the hole spin relaxation time in single self-assembled In${}_{1-x}$Ga${}_x$As/GaAs quantum dots by electric field
• Optical amplitude and phase modulation dynamics at the single-photon level in a quantum dot ridge waveguide
• Hole spin coherence in InAs/InAlGaAs self-assembled quantum dots emitting at telecom wavelengths
• Phonon-assisted carrier tunneling in coupled quantum dot systems with hyperfine-induced spin flip
• Dynamics of Charge Leakage From Self-assembled CdTe Quantum Dots
• Hole spin splitting in a Ge quantum dot with finite barriers
• The influence of spin-flip scattering on the preparation and detection of a single spin state in a quantum dot attached to a spin battery
• Spin-orbit-induced hole spin relaxation in a quantum dot molecule: the effect of $s$-$p$ coupling
• Passive stabilization of hole spin qubit using optical Stark effect
• Polarization correlated photons from a positively charged quantum dot
• Antibonding ground states in semiconductor artificial molecules