Talks

Invited Talks

(Presentations marked with a ‡ are for accepted invitations at upcoming venues.)

[39]‡ "Classifying reconfigurable photonic topology using matrix homotopy," SPIE Photonics West, San Francisco, CA. January 17-22, 2026.
[38]‡ "Surface emitting laser design based on a line of bound states in the continuum," SPIE Photonics West, San Francisco, CA. January 17-22, 2026.
[37]‡ "Classifying topology in open and nonlinear photonic systems," PIERS 2025, Chiba, Japan. November 5-9, 2025.
[36]‡ "Classifying topology in open and nonlinear photonic systems," SPIE Optics and Photonics, San Diego, CA. August 7th, 2025.
[35]‡ "Classifying Fragile Topology Using Matrix Homotopy," META 2025, Malaga, Spain. July 22-25, 2025.
[34] "Local topological classification of open and nonlinear photonic systems," TopoPhoto 2025, Donostia-San Sebastian, Spain. July 2nd, 2025.
[33] "An operator-based approach to classifying topology in open and nonlinear systems," ETOPIM 13 (the International Conference on Elastic, Electrical, Transport and Optical Properties of Inhomogeneous Media), New York, NY. June 19th, 2025.
[32] "Classifying material topology using matrix homotopy," Topology and Geometry beyond Crystals, Nordita, Stockholm, Sweden, May 27th, 2025. PDF download
[31] "Classifying topology in open and nonlinear photonic systems," Waves 2025, Athens, GA. April 15th, 2025.
[30] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," JMU Würzburg, Würzburg, Germany. February 26th, 2025. PDF download
[29] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," IFW Dresden, Dresden, Germany. February 25th, 2025.
[28] "Local topological classification of open and nonlinear materials," AMS Special Session on Mathematics of Topological Insulators, JMM 2025, Seattle, WA. January 10th, 2025.
[27] "Understanding defects, unfolding bands, and classifying topology using multi-operator pseudospectra," Sandia National Laboratories, Albuquerque, NM. January 8th, 2025.
[26] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," Duke Advanced Multifunctional Metamaterials (AMM) Workshop, Durham, NC. November 18th, 2024.
[25] "Classifying Topology in Open and Nonlinear Photonic Systems," 21st International Workshop on Pseudo-Hermitian Hamiltonians in Quantum Physics (PHHQP-XXI), Chania, Greece. September 24th, 2024. PDF download
[24] "Creating Controllable Sets of Bound States in the Continuum," SPIE Optics and Photonics, San Diego, CA. August 22nd, 2024.
[23] "An operator-based approach to topological physics, and creating controllable sets of bound states in the continuum," Physics of Excitons and Polaritons in Semiconductors 2024, Reykjavík, Iceland. August 9th, 2024.
[22] "An operator-based approach to topological physics, and creating controllable sets of bound states in the continuum," CUNY, New York, NY. July 25th, 2024. (Virtual)
[21] "Classifying Topology in Open Photonic Systems," META 2024, Toyama, Japan. July 18th, 2024.
[20] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," International workshop on Quantum Materials and Structured Light 2024, Ettore Majorana Foundation, Erice, Italy. July 9th, 2024.
     ▶  Invited Tutorial  
[19] "An operator-based approach to topological physics, and creating controllable sets of bound states in the continuum," Laboratory for Ultrafast Materials and Optical Science (LUMOS), Los Alamos National Laboratory, Los Alamos, NM. November 2nd, 2023.
[18] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," Max Planck Institute for the Science of Light, Erlangen, Germany. October 27th, 2023.
[17] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," RPTU Kaiserslautern-Landau, Kaiserslautern, Germany. October 23rd, 2023.
[16] "An operator-based approach to topological photonics: Band structures and Bloch eigenstates not required," International Workshop on Polaritons in Emerging Materials, IBS: PCS, Daejeon, South Korea. September 14th, 2023. web recording
[15] "Identifying topology directly from Maxwell's equations: Band structures and Bloch eigenstates not required," META 2023, Paris, France. July 18, 2023.
[14] "An operator-based approach to topological physics: Band structures and Bloch eigenstates not required," Emory University, Atlanta, GA. April 13, 2023.
[13] "Identifying topology directly from Maxwell's equations: Band structures and Bloch eigenstates not required," Florida A&M University, Tallahassee, FL. February 27, 2023.
[12] "Creating Controllable Sets of Bound States in the Continuum," PQE 2023, Snowbird, UT. January 10, 2023.
[11] "Creating Bound States in the Continuum Using Superstructure Photonics," MRS Fall Meeting, Boston, MA. November 28th, 2022.
[10] "Identifying topology directly from Maxwell's equations: Band structures and Bloch eigenstates not required," International Conference of Quantum, Nonlinear and Nanophotonics, Jena, Germany. September 7, 2022.
[9] "Using symmetry and topology to confine and control light," University of New Mexico, Albuquerque, NM. September 2, 2021.
[8] "Topological photonic systems: from structure to function," Sandia National Laboratories, Albuquerque, NM. September 1, 2020.
[7] "Topological photonic systems: from structure to function," Rice University, Houston, TX. February 18, 2020.
[6] "Advances in non-Hermitian and topological photonics," Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Daejeon, South Korea. October 22, 2019.
[5] "Weyl points and Weyl exceptional rings in helical waveguide arrays," Weyl Fermions in Condensed Matter, International Institute of Physics, Natal, Brazil. August 7, 2019.
[4] "Exceptional contours formed in non-Hermitian topological photonic systems," Banff International Research Station Workshop on Photonic Topological Insulators, Banff, Canada. September 14, 2017.
[3] "Photonic systems with patterned gain and loss," Northrop Grumman Next Workshop on the Physics of Light Matter Interactions and Excited State Dynamics, Redondo Beach, CA. October 27, 2016.
[2] "Exceptional contours and eigenvalue dynamics in systems with non-uniform gain and loss," Yale University: Applied Physics Seminar, New Haven, CT. August 24, 2016.
[1] "Quantitative test of general theories of the intrinsic laser linewidth," Texas A&M Physics of Quantum Electronics Follow-on Workshop, College Station, TX. January 12, 2015.