Directing Nuclear Spin Flips in InAs Quantum Dots Using Detuned Optical Pulse Trains

Abstract

We find that detuning an optical pulse train from electronic transitions in quantum dots controls the direction of nuclear spin flips. The optical pulse train generates electron spins that precess about an applied magnetic field, with a spin component parallel to the field only for detuned pulses. This component leads to asymmetry in the nuclear spin flips, providing a way to stabilize and control the nuclear spin polarization. This effect is observed using two-color, time-resolved Faraday rotation and ellipticity.

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Document Details

Document Type
Technical Report
Publication Date
Apr 24, 2009
Accession Number
ADA550040

Entities

People

  • Allan S. Bracker
  • Andrew R. Shabaev
  • S. G. Carter
  • Sophia E. Economou
  • T. A. Kennedy
  • Thomas L. Reinecke

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Asymmetry
  • Detuning
  • Frequency
  • Intensity
  • Magnetic Fields
  • Military Research
  • Nuclear Spins
  • Precession
  • Probability
  • Quantum Bits
  • Quantum Dots
  • Quantum Properties
  • Repetition Rate
  • Rotation
  • Spin States
  • Steady State
  • Transitions

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots