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Quantum interface between light and nuclear spins in quantum dots

Source: Phys. Rev. B 81, 045309 (2010); doi:10.1103/PhysRevB.81.045309

Published 12 January 2010

PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 42.50.Ex
    Optical implementations of quantum information processing and transfer
  • 78.67.Hc
    Optical properties of quantum dots
  • YEAR: 2010
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Heike Schwager, J. Ignacio Cirac, and Gza Giedke
Max-Planck-Institut fr Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany
The coherent coupling of flying photonic qubits to stationary matter-based qubits is an essential building block for quantum-communication networks. We show how such a quantum interface can be realized between a traveling-wave optical field and the polarized nuclear spins in a singly charged quantum dot strongly coupled to a high-finesse optical cavity. By adiabatically eliminating the electron a direct effective coupling is achieved. Depending on the laser field applied, interactions that enable either write-in or read-out are obtained. ©2010 The American Physical Society
History: Received 30 September 2009; revised 9 December 2009; published 12 January 2010
Permalink: http://link.aps.org/abstract/PRB/v81/e045309
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