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Cavity optomechanical device

About

We are interested in the physics and engineering of nanophotonic devices in the context of quantum information science, metrology, communications, and sensing.  We use nanofabrication technology to develop engineered geometries that strongly enhance light-matter interactions, such as parametric nonlinear optical processes, coupling to quantum emitters, and acousto-optic effects.  We study the basic device-level physics and tailor devices for specific applications, and our research generally involves computational modeling, nanofabrication, and optoelectronic and quantum photonic characterization. Recent topics have included quantum frequency conversion, single-photon and entangled-photon generation, microresonator frequency combs, optical parametric oscillators, and cavity electro-optomechanical transducers.

More generally, nanophotonic systems offer us the ability to study interesting physics in a controllable way, using platforms that are inherently suitable for the development of new technologies. Our labs are at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD, and the Joint Quantum Institute at the University of Maryland in College Park. 

Group Lead

Kartik Srinivasan portrait

Research Publications

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Research

  • Numerical simulations of a circular Bragg grating microcavity (top) [Davanco et al, Appl. Phys. Lett, 2011] and a slot-mode optomechanical resonator (middle and bottom) [Davanco et al, Optics Express, 2012].
  • Proposed microwave-to-optical quantum transducer based on a coupled piezoelectric and optomechanical resonator system (Wu et al, Phys Rev. Applied, 2020).
  • Concept of spectral translation - a near-infrared pump mediates translation of an input signal in the telecom to an output in the visible (Lu et al, Nature Photonics, 2019).
  • Schematic of heterogeneous integration for quantum photonics

News

  • Image listing the operating wavelengths of different physical systems in use in quantum technologies.

    Review article on integrated lasers in the visible and short near-infrared regimes

    October 30, 2024

    We have written a review article describing advances in chip-integrated laser technologies in the visible and short near-infrared wavelength regimes.

  • Illustration of a chip-integrated photonic microresonator coupled to vapor-phase Rb atoms

    New paper on cavity QED with integrated photonics and atomic vapors

    October 1, 2024

    In a new paper, we demonstrate interactions between vapor-phase Rb atoms and an integrated photonic microresonator down to the few-atom, few-photon level.

  • Optical parametric oscillation device with an underlying thermo-optic heater (top) and OPO devices generating colors across the green gap (bottom).

    New results on chip-scale lasers based on nonlinear integrated photonics

    September 30, 2024

    In two new papers, we describe how to increase the continuous tuning range of chip-integrated optical parametric oscillators (OPOs) and we demonstrate dense coverage of the so-called 'green gap' spectral region using such OPOs.

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Group Conference or Seminar Presentations