Towards a quantum memory based on an excited-state absorption in Tm:YAP

ORAL

Abstract

Quantum memories compatible with telecommunication-wavelength photons are a key element towards building a large-scale quantum network, since they allow remote quantum information exchange through existing low-loss fibre infrastructure. Rare-earth ion (REI) doped crystals exhibit broad inhomogenous lines (∼GHz), allowing for large spectral multiplexing, while preserving very good coherence properties such as long coherence times (∼ms-s) leading to long storage times. Given the appeal of a quantum memory at telecom wavelength, and the difficulty in reaching high efficiencies with erbium-doped crystals, we performed spectroscopic investigations of  3F4↔3H4 excited-state transition at around 1450 nm wavelength in various Tm-doped crystals. In this talk we will present recent results for Thulium-doped yttrium aluminium perovskite (Tm:YAP). We will discuss an optical hole burning scheme that allows us to assess the coherence of this transition and show that an atomic frequency comb (AFC) based quantum memory can be achieved in this platform.

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Presenters

  • Nir Alfasi

    • QuTech, Delft University of Technology

Authors

  • Nir Alfasi

    • QuTech, Delft University of Technology

  • Sara Marzban

    • QuTech, Delft University of Technology
    • Delft University of Technology

  • Joshua A Slater

    • QuTech, Delft University of Technology

  • Aaron D Marsh

    • Department of Physics, Montana State University

  • Philip J. T Woodburn

    • Department of Physics, Montana State University

  • Hridya Meppully Sasidharan

    • QuTech, Delft University of Technology

  • Mohsen Falamarzi Askarani

    • QuTech, Delft University of Technology
    • Delft University of Technology

  • Rufus L Cone

    • Department of Physics, Montana State University
    • Montana State University

  • Charles W Thiel

    • Department of Physics, Montana State University
    • Montana State University

  • Wolfgang Tittel

    • Delft University of Technology, University of Geneva and Schaffhausen Institute for Technology in Geneva
    • QuTech, Delft University of Technology
    • Delft University of Technology & Department of Applied Physics, University of Geneva & Schaffhausen Institute of Technology in Geneva
    • Delft Univiersity of Technology