Quenching of dynamic nuclear polarization by spin-orbit coupling in GaAs quantum dots

Abstract

The central-spin problem, in which an electron spin interacts with a nuclear spin bath, is a widely studied model of quantum decoherence. Dynamic nuclear polarization (DNP) occurs in central spin systems when electronic angular momentum is transferred to nuclear spins and is exploited in spin-based quantum information processing for coherent electron and nuclear spin control. However, the mechanisms limiting DNP remain only partially understood. Here, we show that spin-orbit coupling quenches DNP in a GaAs double quantum dot, even though spin-orbit coupling in GaAs is weak. Using Landau-Zener sweeps, we measure the dependence of the electron spin-flip probability on the strength and direction of in-plane magnetic field, allowing us to distinguish effects of the spin-orbit and hyperfine interactions. To confirm our interpretation, we measure high-bandwidth correlations in the electron spin-flip probability and attain results consistent with a significant spin-orbit contribution. We observe that DNP is quenched when the spin-orbit component exceeds the hyperfine, in agreement with a theoretical model. Our results shed new light on the surprising competition between the spin-orbit and hyperfine interactions in central-spin systems.

5+12 pages, 9 figures

References in corpus (12)

• Coherent control of a single electron spin with electric fields
• Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
• Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
• Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
• Direct Measurement of the Spin-Orbit Interaction in a Two-Electron InAs Nanowire Quantum Dot
• Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
• Suppressing qubit dephasing using real-time Hamiltonian estimation
• Hyperfine-mediated gate-driven electron spin resonance
• Suppression of spin relaxation in an InAs nanowire double quantum dot
• Semiclassical dynamics and long time asymptotics of the central-spin problem in a quantum dot
• Spin relaxation anisotropy in a GaAs quantum dot
• Characterization of S-T${}_{+}$ Transition Dynamics via Correlation Measurements

Cited by in corpus (41)

• Semiconductor Spin Qubits
• Coherent spin state transfer via Heisenberg exchange
• Integrated silicon qubit platform with single-spin addressability, exchange control and robust single-shot singlet-triplet readout
• Controlling spin-orbit interactions in silicon quantum dots using magnetic field direction
• Spectrum of the Nuclear Environment for GaAs Spin Qubits
• Spin-orbit Interactions for Singlet-Triplet Qubits in Silicon
• Integrable time-dependent quantum Hamiltonians
• Quantum simulation of antiferromagnetic Heisenberg chain with gate-defined quantum dots
• Solvable multistate model of Landau-Zener transitions in cavity QED
• Anisotropy and suppression of spin--orbit interaction in a GaAs double quantum dot
• Tuning methods for semiconductor spin--qubits
• Landau-Zener-Stuckelberg-Majorana interferometry of a single hole
• Coherent spin-valley oscillations in silicon
• Solvable 4-state Landau-Zener model of two interacting qubits with path interference
• Quantum control of hole spin qubits in double quantum dots
• Footprints of hyperfine, spin-orbit, and decoherence effects in Pauli spin blockade
• The Role of Multilevel Landau-Zener Interference in Extreme Harmonic Generation
• Multistate Landau-Zener models with all levels crossing at one point
• Strong hole-photon coupling in planar Ge for probing charge degree and strongly-correlated states
• Optimal geometry of lateral GaAs and Si/SiGe quantum dots for electrical control of spin qubits
• Transfer of a quantum state from a photonic qubit to a gate-defined quantum dot
• Microwave-frequency scanning gate microscopy of a Si/SiGe double quantum dot
• Low-Error Operation of Spin Qubits with Superexchange Coupling
• Consequences of integrability breaking in quench dynamics of pairing Hamiltonians
• Characterisation of an exchange-based two-qubit gate for resonant exchange qubits
• All-electrical universal control of a double quantum dot qubit in silicon MOS
• Measurement of back-action from electron spins in a gate defined GaAs double quantum dot coupled to a mesoscopic nuclear spin bath
• Phonon spectral density in a GaAs/AlGaAs double quantum dot
• Effects of charge noise on a pulse-gated singlet-triplet $S-T_{-}$ qubit
• Self assembled Wigner crystals as mediators of spin currents and quantum information
• Wigner-molecularization-enabled dynamic nuclear field programming
• Spin-orbit enabled quantum transport channels in a two-hole double quantum dot
• Characterization of S-T${}_{+}$ Transition Dynamics via Correlation Measurements
• Electron spin-flip correlations due to nuclear dynamics in driven GaAs double dots
• Coherent manipulation of single electron spins with Landau-Zener sweeps
• Spin-orbit signatures in the dynamics of singlet-triplet qubits in double quantum dots
• The formation of a nuclear-spin dark state in silicon
• Noise suppression and long-range exchange coupling for gallium arsenide spin qubits
• Spin separation and exchange for quantum dots in the Overhauser field
• Entangling nuclear spins in distant quantum dots via an electron bus
• Dynamical nuclear spin polarization in a quantum dot with an electron spin driven by electric dipole spin resonance