Quantum-dot spin qubit and hyperfine interaction

Abstract

We review our investigation of the spin dynamics for two electrons confined to a double quantum dot under the influence of the hyperfine interaction between the electron spins and the surrounding nuclei. Further we propose a scheme to narrow the distribution of difference in polarization between the two dots in order to suppress hyperfine induced decoherence.

12 pages, 3 figures; Presented as plenary talk at the annual DPG meeting 2006, Dresden (to appear in Advances in Solid State Physics vol. 46, 2006)

References in corpus (14)

• Single-shot read-out of an individual electron spin in a quantum dot
• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field
• Phonon-induced decay of the electron spin in quantum dots
• Hyperfine interaction in a quantum dot: Non-Markovian electron spin dynamics
• Optical pumping of electronic and nuclear spin in single charge-tunable quantum dots
• Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
• Electron spin dynamics in quantum dots and related nanostructures due to hyperfine interaction with nuclei
• Singlet-triplet decoherence due to nuclear spins in a double quantum dot
• Charge detection enables free-electron quantum computation
• Optical pumping of quantum dot nuclear spins
• Enhancement of electron spin coherence by optical preparation of nuclear spins
• Universal Scaling of Hyperfine-Induced Electron Spin Echo Decay
• One-spin quantum logic gates from exchange interactions and a global magnetic field
• g-factor engineering and control in self-assembled quantum dots

Cited by in corpus (4)

• Relaxation and Readout Visibility of a Singlet-Triplet Qubit in an Overhauser Field Gradient
• Nuclear spin dynamics and Zeno effect in quantum dots and defect centers
• Size dependent exciton g-factor in self-assembled InAs/InP quantum dots
• Wavefunction considerations for the central spin decoherence problem in a nuclear spin bath