Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot

Abstract

We study the mechanism of dynamical nuclear spin polarization by hyperfine interaction in spin-blocked double quantum dot system. We calculate the hyperfine transition rates and solve the master equations for the nuclear spins. Specifically, we incorporate the effects of the nuclear quadrupole coupling due to the doping-induced local lattice distortion and strain. Our results show that nuclear quadrupole coupling induced by the 5% indium substitution can be used to explain the recent experimental observation of missing arsenic NMR signal in the spin-blocked double dots.

4 pages, 3 figures

References in corpus (7)

• Spin-flip transitions between Zeeman sublevels in semiconductor quantum dots
• Nuclear spin induced oscillatory current in spin-blocked quantum dots
• Theory of nuclear induced spectral diffusion: Spin decoherence of phosphorus donors in Si and GaAs quantum dots
• Optical pumping of quantum dot nuclear spins
• Electron spin coherence in semiconductors: Considerations for a spin-based solid state quantum computer architecture
• Spin decay and quantum parallelism
• Coulomb "blockade" of Nuclear Spin Relaxation in Quantum Dots

Cited by in corpus (15)

• Knight Field Enabled Nuclear Spin Polarization in Single Quantum Dots
• Nuclear Spins in Nanostructures
• Bistability of the Nuclear Polarisation created through optical pumping in InGaAs Quantum Dots
• Demagnetization of Quantum Dot Nuclear Spins: Breakdown of the Nuclear Spin Temperature Approach
• Quantum Description of Nuclear Spin Cooling in a Quantum Dot
• Quadrupolar spectra of nuclear spins in strained InGaAs quantum dots
• Theory of dynamic nuclear polarization and feedback in quantum dots
• Qubit coherence control in a nuclear spin bath
• General theory of feedback control of a nuclear spin ensemble in quantum dots
• Effective Quantum Dynamics of Interacting Systems with Inhomogeneous Coupling
• Nuclear magnetic resonance inverse spectra of InGaAs quantum dots: Atomistic level structural information
• Decoherence of Nuclear Spin Quantum Memory in Quantum Dot
• Cross-correlation spectra in interacting quantum dot systems
• Spin dynamics of quadrupole nuclei in InGaAs quantum dots
• Magnetic field induced effects in the high source-drain bias current of weakly coupled vertical quantum dot molecules