Microresonator frequency combs offer the promise of precision time and frequency metrology that is integral to applications such as optical atomic clocks in a compact and low-power format that is amenable for deployment outside of a lab.
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.
Microresonator frequency combs offer the promise of precision time and frequency metrology that is integral to applications such as optical atomic clocks in a compact and low-power format that is amenable for deployment outside of a lab.
Epitaxial InAs/GaAs quantum dots are well-established as the basis for bright single-photon sources, because they have nearly unity radiative efficiency and can be emebdded in photonic geometries that enable efficient funneling of the generated photons into a preferred optical channel.
Optical microcavities are a basic tool for enhancing light-matter interactions, primarily through strong spatial and temporal field confinement.
Microresonator optical parametric oscillators based on the third-order optical nonlinearity represent a versatile approach to on-chip, coherent light generation at any user-targeted wavelength across an exceptionally broad spectral range.
We have written a perspective review article on piezo-optomechanical approaches to quantum transduction between the microwave and optical domains.