Applied Physics B

, 122:37 | Cite as

Coherent photocurrent spectroscopy of single InP-based quantum dots in the telecom band at 1.5 µm

  • S. Gordon
  • M. Yacob
  • J. P. Reithmaier
  • M. Benyoucef
  • A. Zrenner
Article
  • 220 Downloads
Part of the following topical collections:
  1. Quantum Repeaters: From Components to Strategies

Abstract

In this work we study the resonant and coherent properties of single InP-based InAs quantum dots, which show an optical emission in the telecom C-band and L-band. High-resolution resonant photocurrent spectroscopy on p–i–n devices reveals narrow linewidths and fully resolved fine structure splittings. We observe Lorentzian line shapes, which allow for the extraction of dephasing times as a function of the applied bias voltage. Coherent ps laser excitation results in pronounced Rabi rotations with increasing pulse area. For π-pulse excitation, we obtain more than 93 % of the theoretically expected photocurrent amplitude. Our results also demonstrate that such state-of-the-art InP-based quantum dots for the telecom band exhibit promising key parameters comparable to well-established InAs/GaAs counterparts.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • S. Gordon
    • 1
  • M. Yacob
    • 2
  • J. P. Reithmaier
    • 2
  • M. Benyoucef
    • 2
  • A. Zrenner
    • 1
  1. 1.Physics Department and Center of Optoelectronics and Photonics Paderborn (CeOPP)Universität PaderbornPaderbornGermany
  2. 2.Institute of Nanostructure Technologies and Analytics (INA), CINSaTUniversity of KasselKasselGermany

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