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Nonlinear light-matter interaction based on integrated waveguides immersed in hot atomic vapor

ORAL

Abstract

The combination of thermal atomic vapor with nanophotonic structures provides a unique platform for the manipulation of atom-photon and light induced atom-atom interactions and can exhibit large optical non-linearities, even at the single photon level.

We can further enhance these non-linearities by using slot waveguides in which we observe repulsive interactions of the atoms within the slot via an enlarged Purcell factor. Thereby we generate a medium that reaches already in this specific setting a nonlinearity on the few photon level. In order to verify the nature of the non-linearity in more detail we incorporate an integrated Mach-Zehnder interferometer to access also the non-linear phase shift.

Furthermore, we present first measurements of the phase shift in a thermal atomic vapor using a fiber based 3x3 interferometer.

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Presenters

  • Annika Belz

    5th Institute of Physics, University of Stuttgart

Authors

  • Annika Belz

    5th Institute of Physics, University of Stuttgart

  • Robin Klöpfer

    5th Institute of Physics, University of Stuttgart

  • Benyamin Shnirman

    Unversity of Stuttgart, 5th Institute of Physics, 5th Institute of Physics, University of Stuttgart

  • Xiaoyu Cheng

    Unversity of Stuttgart, 5th Institute of Physics, 5th Institute of Physics, University of Stuttgart

  • Harald Kübler

    Universität Stuttgart, Universtität Stuttgart, Quantum Valley Ideas Laboratories & Universität Stuttgart, 5th Institute of Physics, University of Stuttgart

  • Charles S Adams

    Department of Physics, Joint Quantum Centre (JQC) Durham-Newcastle

  • Hadiseh Alaeian

    Departments of Electrical & Computer Engineering and Physics & Astronomy, Purdue University, USA, Purdue University, Departments of Electrical & Computer Engineering and Physics & Astronomy, Purdue University

  • Robert Löw

    5. Physikalisches Institut, Universität Stuttgart, Germany, University of Stuttgart, 5th Institute of Physics, University of Stuttgart

  • Tilman Pfau

    University of Stuttgart, 5. Physikalisches Institut, Universität Stuttgart, Germany