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Complete quantum control of exciton qubits bound to isoelectronic centres

Author

Listed:
  • G. Éthier-Majcher

    (Polytechnique Montréal, 2900 boul. Edouard-Montpetit)

  • P. St-Jean

    (Polytechnique Montréal, 2900 boul. Edouard-Montpetit)

  • G. Boso

    (Informazione e Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci 32)

  • A. Tosi

    (Informazione e Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci 32)

  • J. F. Klem

    (Sandia National Laboratories, P. O. Box 5800)

  • S. Francoeur

    (Polytechnique Montréal, 2900 boul. Edouard-Montpetit)

Abstract

In recent years, impressive demonstrations related to quantum information processing have been realized. The scalability of quantum interactions between arbitrary qubits within an array remains however a significant hurdle to the practical realization of a quantum computer. Among the proposed ideas to achieve fully scalable quantum processing, the use of photons is appealing because they can mediate long-range quantum interactions and could serve as buses to build quantum networks. Quantum dots or nitrogen-vacancy centres in diamond can be coupled to light, but the former system lacks optical homogeneity while the latter suffers from a low dipole moment, rendering their large-scale interconnection challenging. Here, through the complete quantum control of exciton qubits, we demonstrate that nitrogen isoelectronic centres in GaAs combine both the uniformity and predictability of atomic defects and the dipole moment of semiconductor quantum dots. This establishes isoelectronic centres as a promising platform for quantum information processing.

Suggested Citation

  • G. Éthier-Majcher & P. St-Jean & G. Boso & A. Tosi & J. F. Klem & S. Francoeur, 2014. "Complete quantum control of exciton qubits bound to isoelectronic centres," Nature Communications, Nature, vol. 5(1), pages 1-5, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4980
    DOI: 10.1038/ncomms4980
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