Multiple Nuclear Polarization States in a Double Quantum Dot

Abstract

We observe multiple stable states of nuclear polarization in a double quantum dot under conditions of electron spin resonance. The stable states can be understood within an elaborated theoretical rate equation model for the polarization in each of the dots, in the limit of strong driving. This model also captures unusual features of the data, such as fast switching and a `wrong' sign of polarization. The results reported enable applications of this polarization effect, including manipulation and control of nuclear fields.

5 pages, 4 figures, 7 pages supplementary material

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Cited by in corpus (28)

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• Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
• Locking electron spins into magnetic resonance by electron-nuclear feedback
• Nuclear Spins in Nanostructures
• Spectrum of the Nuclear Environment for GaAs Spin Qubits
• Theoretical study of nuclear spin polarization and depolarization in self-assembled quantum dots
• Large nuclear spin polarization in gate-defined quantum dots using a single-domain nanomagnet
• Nuclear Spin Dynamics in Double Quantum Dots: Fixed Points, Transients, and Intermittency
• General theory of feedback control of a nuclear spin ensemble in quantum dots
• Steady-State Entanglement in the Nuclear Spin Dynamics of a Double Quantum Dot
• Collective Nuclear Stabilization by Optically Excited Hole in Quantum Dot
• Nuclear Spin Dynamics in Double Quantum Dots: Multi-Stability, Dynamical Polarization, Criticality and Entanglement
• Observation of Hysteretic Transport Due to Dynamic Nuclear Spin Polarization in a GaAs Lateral Double Quantum Dot
• Suppression of Zeeman gradients by nuclear polarization in double quantum dots
• Electrical current and coupled electron-nuclear spin dynamics in double quantum dots
• Narrowing of the Overhauser field distribution by feedback-enhanced dynamic nuclear polarization
• Self-sustaining dynamical nuclear polarization oscillations in quantum dots
• Dynamical nuclear spin polarization induced by electronic current through double quantum dots
• Temperature-dependent dynamical nuclear polarization bistabilities in double quantum dots in the spin-blockade regime
• Nuclear spin pumping and electron spin susceptibilities
• Driven dynamics of a quantum dot electron spin coupled to bath of higher-spin nuclei
• Detection of spin injection into a double quantum dot: Violation of magnetic-field-inversion symmetry of nuclear polarization instabilities
• Multistability and spin diffusion enhanced lifetimes in dynamic nuclear polarization in a double quantum dot
• Noise suppression and long-range exchange coupling for gallium arsenide spin qubits
• Role of dual nuclear baths on spin blockade leakage current bistabilities
• Transport-induced suppression of nuclear field fluctuations in multi-quantum-dot systems
• 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