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Time-Resolved Optical Spectroscopy of Electrically Gated Single Quantum Emitters

ORAL

Abstract

Quantum emitters such as nanocrystalline quantum dots or point defects in solid state materials have the potential to produce single photons on demand. We have developed a novel optical spectrometer capable of probing the transient response of single quantum emitters with dimensions ~10 nm or less over a wide range of frequencies in THz and NIR [1]. The experiments take advantage of strong nonlinearities in SrTiO3 and the ability to “write” conductive nanowires at the LaAlO3/SrTiO3 interface, with ~10 nm gaps co-located with a single quantum emitter. We will probe a variety of single quantum emitters individually under the influence of large electric fields and look for Stark shifts in absorption or emission in the quantum dots, and gate-controlled lifetime/emission effects.
[1] L. Chen, et al., Light: Science & Appl. 8, 24 (2019)
[2] E. Sheridan, Nano Letters (2020)
[3] M. Huang, et al., APL Materials 3, 062502 (2015)

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Presenters

  • Melanie Dieterlen

    University of Pittsburgh

Authors

  • Melanie Dieterlen

    University of Pittsburgh

  • Erin Sheridan

    University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh

  • Patrick R Irvin

    Physics and Astronomy, University of Pittsburgh, University of Pittsburgh, Department of Physics and Astronomy, University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh

  • Jeremy Levy

    Physics and Astronomy, University of Pittsburgh, University of Pittsburgh, Department of Physics and Astronomy, University of Pittsburgh, Department of Physics & Astronomy, University of Pittsburgh

  • Kitae Eom

    Materials Science and Engineering, University of Wisconsin-Madison, Department of Materials Science and Engineering, University of Wisconsin-Maddison, Department of Materials Science and Engineering, University of Wisconsin, Department of Materials Science Engineering, University of Wisconsin-Madison, Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin, Material Science and Engineering, University of Wisconsin-Madison, University of Wisconsin-Madison, University of Wisconsin-Maddison

  • Chang-Beom Eom

    Materials Science and Engineering, University of Wisconsin-Madison, University of Wisconsin, Madison, Department of Materials Science and Engineering, University of Wisconsin-Maddison, Department of Materials Science and Engineering, University of Wisconsin, Department of Materials Science Engineering, University of Wisconsin-Madison, Department of Materials Science and Engineering, University of Wisconsin-Madison,, University of Wisconsin, Material Science and Engineering, University of Wisconsin-Madison, University of Wisconsin-Madison, University of Wisconsin-Maddison, University of Wisconsin - Madison, University of Wisconsin Madison, Department of Materials Science and Engineering, University of Wisconsin-Madison