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Cavity optomechanical device


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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  • 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


  • List of lab/collaborator talks at CLEO

    Upcoming talks at CLEO from our lab and its collaborators

    May 2, 2024
  • Image depicting the generation of two flavors of solitons in a microcavity generated through the parametric driving process.

    Article on a new type of microresonator soliton frequency comb published

    May 1, 2024

    With a team of international collaborators, we have published an article in Nature Photonics that describes the investigation of a new type of cavity soliton frequency comb.

  • two-laser system CS

    Researchers develop a new type of frequency comb that promises to further boost the accuracy of time keeping

    April 2, 2024

    Chip-based devices known as frequency combs, which measure the frequency of light waves with unparalleled precision, have revolutionized time keeping, the detection of planets outside of our solar system and high-speed optical communication. Now, scientists at the National Institute of Standards and Technology (NIST) and their collaborators have developed a new way of creating the combs that promises to boost their already exquisite accuracy and allow them to measure light over a range of frequencies that was previously inaccessible. The extended range will enable frequency combs to probe cells and other biological material. The new devices, which are fabricated on a small glass chip, operate in a fundamentally different way from previous chip-based frequency combs, also known as microcombs.

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Group Conference or Seminar Presentations