Optically Induced Spin Gates in Coupled Quantum Dots Using the Electron-Hole Exchange Interaction

Abstract

We propose a fast optically induced two-qubit C-PHASE gate between two resident spins in a pair of coupled quantum dots. An excited bound state which extends over the two dots provides an effective electron-electron exchange interaction. The gate is made possible by the electron-hole exchange interaction, which isolates a single transition in the system. When combined with appropriate single-qubit rotations, this gate generates an entangled state of the two spins.

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Document Details

Document Type
Technical Report
Publication Date
Sep 08, 2008
Accession Number
ADA593761

Entities

People

  • Sophia E. Economou
  • Thomas L. Reinecke

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Electron Holes
  • Electronic States
  • Electrons
  • Energy Levels
  • Excitons
  • Frequency
  • Ground State
  • Magnetic Fields
  • Military Research
  • Particles
  • Quantum Computing
  • Quantum Dots
  • Quantum Information
  • Quantum Numbers
  • Quantum Properties
  • Quasiparticles
  • Reliability

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Quantum Science - Quantum Dots