Current-Induced Entanglement of Nuclear Spins in Quantum Dots

Abstract

We propose an entanglement mechanism of nuclear spins in quantum dots driven by the electric current accompanied by the spin flip. This situation is relevant to a leakage current in spin-blocked regions where electrons cannot be transported unless their spins are flipped. The current gradually increases the components of larger total spin of nuclei. This correlation among the nuclear spins markedly enhances the spin-flip rate of electrons and hence the leakage current. The enhancement of the current is observable when the residence time of electrons in the quantum dots is shorter than the dephasing time T*_2 of nuclear spins.

4 pages, 4 figures

Cited by in corpus (16)

• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field
• Coherent and Collective Quantum Optical Effects in Mesoscopic Systems
• Spin decoherence due to a randomly fluctuating spin bath
• Superradiance-like Electron Transport through a Quantum Dot
• Readout scheme of the fullerene-based quantum computer by a single electron transistor
• Theory of box-model hyperfine couplings and transport signatures of long-range nuclear-spin coherence in a quantum-dot spin valve
• Balancing coherent and dissipative dynamics in a central-spin system
• 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
• Non-equilibrium triplet blockade in parallel coupled quantum dots
• Nuclear Magnetometry Study of Spin Dynamics in Bilayer Quantum Hall Systems
• How to Measure the Quantum State of Collective Atomic Spin Excitation
• Dicke Model for Quantum Hall Systems
• Magnetic field induced effects in the high source-drain bias current of weakly coupled vertical quantum dot molecules
• Superradiant-like dynamics by electron shuttling on a nuclear-spin island
• Theoretical study of a localized quantum spin reversal by the sequential injection of spins in a spin quantum dot