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Proposal for high-speed and high-fidelity electron-spin initialization in a negatively charged quantum dot coupled to a microcavity in a weak external magnetic field

Source: Phys. Rev. A 82, 022301 (2010); doi:10.1103/PhysRevA.82.022301

Published 2 August 2010

PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 78.67.Hc
    Optical properties of quantum dots
  • 42.50.Pq
    Cavity quantum electrodynamics; micromasers
  • 73.21.La
    Quantum dots (electron states/collective excitations)
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Arka Majumdar, Ziliang Lin, Andrei Faraon, and Jelena Vučković
E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
We describe a proposal for fast electron-spin initialization in a negatively charged quantum dot coupled to a microcavity without the need for a strong magnetic field. We employ two-photon excitation to access trion states that are spin forbidden by one-photon excitation. Our simulation shows a maximum initialization speed of 1.3 GHz and maximum fidelity of 99.7% with realistic system parameters. ©2010 The American Physical Society
History: Received 20 July 2009; published 2 August 2010
Permalink: http://link.aps.org/abstract/PRA/v82/e022301
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