Theory of Fast Optical Spin Rotation in a Quantum Dot Based on Geometric Phases and Trapped States

Abstract

A method is proposed for the optical rotation of the spin of an electron in a quantum dot using excited trion states to implement operations significantly faster than those of most existing proposals. Key ingredients are the geometric phase induced by 2 hyperbolic secant pulses, use of coherently trapped states and use of naturally dark states. Our proposal covers a variety of quantum dots by addressing different parameter regimes. Numerical simulations with typical parameters for InAs self-assembled quantum dots, including their dissipative dynamics, give fidelities of the operations in excess of 99%.

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Document Details

Document Type
Technical Report
Publication Date
Nov 19, 2007
Accession Number
ADA593676

Entities

People

  • Sophia E. Economou
  • Thomas L. Reinecke

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Angular Momentum
  • Bandwidth
  • Coherent Radiation
  • Detuning
  • Electrons
  • Energy Levels
  • Frequency
  • Ground State
  • Information Processing
  • Liouville Equation
  • Military Research
  • Quantum Bits
  • Quantum Dots
  • Quantum Properties
  • Rotation
  • Spin States
  • Total Angular Momentum

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots