Fast Optically Driven Spin Qubit Gates in an InAs Quantum Dot

Abstract

The ability to manipulate the spin states of charges confined in quantum dots (QDs) is essential for the realization of a quantum computer based on such spins. Here, we present experimentally realized electron spin qubit gates in a single self-assembled InAs QD using a combination of picosecond optical pulses, spin precession about an external DC magnetic field and optically generated geometric phases. Arbitrary unitary operations on the electron spin qubit may be constructed using a combination of optical pulses and either spin precession or the optically generated geometric phases.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA558782

Entities

People

  • Allan S. Bracker
  • Bo Sun
  • D. G. Steel
  • Daniel Gammon
  • Erik D. Kim
  • Katherine Truex
  • Lu Sham
  • Xiaodong Xu

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Beat Signals
  • Energy Levels
  • Frequency
  • Geometry
  • Ground State
  • Information Processing
  • Magnetic Fields
  • Modulation
  • Optical Pumping
  • Phase Shift
  • Quantum Beats
  • Quantum Computers
  • Quantum Computing
  • Quantum Dots
  • Quantum Information
  • Semiconductors
  • Spin States

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