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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).
  • Time-energy entangled photons in a microring resonator are created so that one photon is resonant with the optical transition in a quantum memory (left), while the other is in the telecom band (Lu et al, Nature Physics, 2019).


  • A green line branches into a blue, a green and a red line inside of a flat ring.

    Do the Bump: NIST Scientists Perfect Miniaturized Technique to Generate Precise Wavelengths of Visible Laser Light

    December 4, 2023
  • Scanning electron microscope image of a grating inscribed on the inner sidewall of a microring resonator.

    Towards arbitrary dispersion engineering for broadband microcombs

    July 6, 2023

    We describe an approach for near-arbitrary dispersion engineering of photonic crystal microrings used in microresonator frequency combs.

  • Schedule of CLEO talks

    Upcoming CLEO talks from our lab and its collaborators

    May 5, 2023

    Schedule of our talks at CLEO 2023

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Group Conference or Seminar Presentations