Accession Number:

ADA550040

Title:

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

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2009-04-24

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Electricity and Magnetism
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE