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)

*ES acknowledges support from the NSF GRFP (1747452). JL acknowledges a Vannevar Bush Faculty Fellowship (ONR N00014-15-1-2847) and ONR N00014-20-1-2481. C-BE acknowledges NSF DMREF (DMR-1629270), AFOSR (FA9550-15-1-0334). The work at UW-M was supported by AFSOR FA9550-15-1-0334 and Gordon and Betty Moore Foundation’s EPiQS Initiative, Grant GBMF9065 to Chang-Beom Eom.

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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