OSC Colloquium: Prineha Narang

    Thursday, February 11, 2021 - 3:30pm - 5:00pm
    Virtual Via Zoom

    Open to campus and public.


    Public Video Unavailable, Internal Release only


    Speaker: Prineha Narang

    Topic: Predicting and Controlling Correlated Light-Matter Interactions in Quantum Systems

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    The physics of quantum matter hosts spectacular excited-state and nonequilibrium effects, but many of these phenomena remain challenging to control and, consequently, technologically under-explored. My group’s research, therefore, focuses on how quantum systems behave, particularly away from equilibrium, and how we can harness these effects 1. By creating predictive theoretical and computational approaches to study dynamics, decoherence and correlations in matter, our work could enable technologies that are inherently more powerful than their classical counterparts ranging from scalable quantum information processing and networks, to ultra-high efficiency optoelectronic and energy conversion systems. In this talk, I will present work from my research group on describing, from first principles, the microscopic dynamics, decoherence and optically-excited collective phenomena in quantum matter at finite temperature to quantitatively link predictions with 3D atomic-scale imaging, quantum spectroscopy, and macroscopic behavior. Capturing these dynamics poses unique theoretical and computational challenges. The simultaneous contribution of processes that occur on many time and length-scales have remained elusive for state-of-the-art calculations and model Hamiltonian approaches alike, necessitating the development of new methods in computational condensed matter and quantum optics 2–4. I will introduce our work at the intersection of ab initio cavity quantum-electrodynamics and electronic structure methods to treat electrons, photons and phonons on the same quantized footing, accessing new observables in strong light-matter coupling. Building on this, I will show selected examples of our approach in ab initio design of active defects in quantum materials 5–7towards selectively linking these active defects 8–10. Finally, I will present an outlook on driving quantum systems far out-of-equilibrium to control the coupled electronic and lattice degrees-of-freedom 11–13.


    1.    Head-Marsden, K., Flick, J., Ciccarino, C. J. & Narang, P. Quantum Information and Algorithms for Correlated Quantum Matter. Chem. Rev.(2020) doi:10.1021/acs.chemrev.0c00620.

    2.    Rivera, N., Flick, J. & Narang, P. Variational Theory of Nonrelativistic Quantum Electrodynamics. Phys. Rev. Lett.122, 193603 (2019).

    3.    Flick, J., Rivera, N. & Narang, P. Strong light-matter coupling in quantum chemistry and quantum photonics. Nanophotonics7, 1479–1501 (2018).

    4.    Flick, J. & Narang, P. Cavity-Correlated Electron-Nuclear Dynamics from First Principles. Physical Review Lettersvol. 121 (2018).

    5.    Narang, P., Ciccarino, C. J., Flick, J. & Englund, D. Quantum Materials with Atomic Precision: Artificial Atoms in Solids: Ab Initio Design, Control, and Integration of Single Photon Emitters in Artificial Quantum Materials. Adv. Funct. Mater.29, 1904557 (2019).

    6.    Hayee, F. et al.Revealing multiple classes of stable quantum emitters in hexagonal boron nitride with correlated optical and electron microscopy. Nat. Mater.19, 534–539 (2020).

    7.    Ciccarino, C. J. et al.Strong spin–orbit quenching via the product Jahn–Teller effect in neutral group IV qubits in diamond. npj Quantum Materials5, 75 (2020).

    8.    Neuman, T., Wang, D. S. & Narang, P. Nanomagnonic Cavities for Strong Spin-Magnon Coupling and Magnon-Mediated Spin-Spin Interactions. Phys. Rev. Lett.125, 247702 (2020).

    9.    Wang, D. S., Neuman, T. & Narang, P. Dipole-coupled emitters as deterministic entangled photon-pair sources. Phys. Rev. Research2, 043328 (2020).

    10.  Neuman, T. et al.A Phononic Bus for Coherent Interfaces Between a Superconducting Quantum Processor, Spin Memory, and Photonic Quantum Networks. arXiv [quant-ph](2020).

    11.  Juraschek, D. M., Meier, Q. N. & Narang, P. Parametric Excitation of an Optically Silent Goldstone-Like Phonon Mode. Physical Review Lettersvol. 124 (2020).

    12.  Juraschek, D. M., Narang, P. & Spaldin, N. A. Phono-magnetic analogs to opto-magnetic effects. Phys. Rev. Research2, 043035 (2020).

    13.  Juraschek, D. M., Neuman, T., Flick, J. & Narang, P. Cavity control of nonlinear phononics. arXiv [cond-mat.mtrl-sci](2019).

    Speaker Bio(s): 

    Prineha Narang is an Assistant Professor at the John A. Paulson School of Engineering and Applied Sciences at Harvard University. Prior to joining the faculty, Prineha came to Harvard as a Ziff Fellow and worked as a Research Scholar in Condensed Matter Theory at the MIT Department of Physics. She received an M.S. and Ph.D. in Applied Physics from the California Institute of Technology. Prineha’s work has been recognized by many awards and special designations, including a National Science Foundation CAREER Award in 2020, being named a Moore Inventor Fellow by the Gordon and Betty Moore Foundation, CIFAR Azrieli Global Scholar by the Canadian Institute for Advanced Research, a Top Innovator by MIT Tech Review (MIT TR35), and a Young Scientist by the World Economic Forum in 2018. Outside of science, she is an avid triathlete and runner. 


    Colloquium will start at 3:30pm, following will be a meet and greet.