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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

  • 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.

  • Red light forms a cone above a glowing point in the center of concentric rings. A square to the right shows a closeup of a dot in the center of red concentric rings.

    Bullseye! New Method Accurately Centers Quantum Dots Within Photonic Chips

    March 22, 2024

    Researchers at JQI and the National Institute of Standards and Technology (NIST) have developed standards and calibrations for optical microscopes that allow quantum dots to be aligned with the center of a photonic component to within an error of 10 to 20 nanometers (about one-thousandth the thickness of a sheet of paper). Such alignment is critical for chip-scale devices that employ the radiation emitted by quantum dots to store and transmit quantum information.

  • List of group talks at Photonics West

    Group talks at Photonics West

    January 21, 2024
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