Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron

2007/04/27 by Patrick Maletinsky, P. Maletinsky, A. Badolato +2 · 4 citations
Chemistry · Physics and Astronomy · #Atomic physics #Chemistry #Condensed matter physics #Dipole #Electron #Magnetic properties of thin films #Nuclear physics #Physics #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Spin (aerodynamics) #Spin polarization #Spins #cond-mat.mes-hall #physics.optics #quant-ph

paper · pdf · doi:10.1103/physrevlett.99.056804

published as Phys. Rev. Lett. 99, 056804 (2007) · 5 pages, 3 figures

arxiv created 2007/04/27 · openalex publication_date 2007/08/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present measurements of the buildup and decay of nuclear spin polarization in a single semiconductor quantum dot. Our experiment shows that we polarize the nuclei in a few milliseconds, while their decay dynamics depends drastically on external parameters. We show that a single electron can very efficiently depolarize nuclear spins in milliseconds whereas in the absence of the electron the nuclear spin lifetime is on the scale of seconds. This lifetime is further enhanced by 1-2 orders of magnitude by quenching the nonsecular nuclear dipole-dipole interactions with a magnetic field of 1 mT.

Citations

• Nonlinear dynamics of quantum dot nuclear spins

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