William Kirby

Talks, lectures, and posters

• "Observation of improved accuracy over classical sparse ground state solvers using a quantum computer," invited talk @ Quantum Simulation Conference (QSim) 2026 (8/11/26). Download slides
• "Quantum Algorithms: Simulation of Physical Systems," lecture @ Qiskit Global Summer School, July 2026. Watch
• "Observation of improved accuracy over classical sparse ground state solvers using a quantum computer," invited talk @ Simon's Institute Quantum Advantage for Computational Chemistry Workshop (5/29/26). Watch
• "Krylov Methods in Quantum Computing," UMD Davoudi group (4/21/26). Download slides
• "Sample-based quantum algorithms in theory and practice," Ohio State University quantum seminar (10/28/25). Download slides
• "Quantum Krylov Algorithm for Szegö Quadrature," poster @ Quantum Simulation Conference (QSim) 2025. Download slides
• "A Quantum Krylov Algorithm for Szegö Quadrature," invited talk @ SIAM-CSE25 (SIAM Conference on Computational Science and Engineering 2025), Minisymposium on "Quantum Algorithms for Scientific Computing" (3/5/25). Download slides
• "Experimental estimation of ground state energies on quantum computers," Tufts University QIQC Seminar (10/17/24). Download slides
• "Error analysis in quantum Krylov algorithms," invited talk @ SIAM-LA24 (SIAM Conference on Applied Linear Algebra 2024), Minisymposium on "Quantum Algorithms for Scientific Computing" (5/14/24). Download slides
• "Diagonalizing large many-body systems on a quantum processor using quantum Krylov," invited talk @ QUANTUMatter 2024 (International Quantum Matter Conference and Expo), BasQ-IBM Industrial Forum (5/9/24).
• "Contextuality and quantum simulation of Pauli Hamiltonians," invited talk @ FQC23 (Foundations of Quantum Computing Workshop 2023) (9/6/23). Download slides
• "Exact and efficient Lanczos method on a quantum computer," invited talk @ ACS Fall Meeting 2023 ().
• "Quantum Krylov algorithms for ground state energy approximation," seminar @ Lawrence Berkeley National Laboratory HEP-QIS group (7/8/23). Download slides
• "Exact and efficient Lanczos method on a quantum computer," invited talk @ SIAM-CSE23 (SIAM Conference on Computational Science and Engineering 2023), Minisymposium on "Quantum Algorithms for Scientific Computing" (3/2/23). Joint work with Mario Motta and Antonio Mezzacapo. Download slides
• "Contextual Subspace Variational Quantum Eigensolver," invited talk @ QSC/SQMS Quantum Algorithms Workshop (University of New Mexico) (5/19/22). Joint work with Andrew Tranter, Alexis Ralli, Tim Weaving, Peter Coveney, and Peter Love.
• "Contextuality and quantum weirdness," Williams College Physics Colloquium (10/22/21). Download slides
• "Exploiting Contextuality in Variational Quantum Eigensolvers," invited talk @ 4th Workshop on Quantum Contextuality in Quantum Mechanics and Beyond (QCQMB 2021, 5/19/21). Joint work with Andrew Tranter and Peter J. Love. Download slides
• "Contextual Subspace Variational Quantum Eigensolver," contributed talk @ APS March Meeting 2021 (3/18/21). Joint work with Andrew Tranter and Peter J. Love. Download slides
• "Improving Variational Quantum Algorithms by Isolating Nonclassicality," invited talk @ Iowa State QCGSS Seminar (2/19/21). Joint work with Andrew Tranter and Peter J. Love. Download slides Watch video
• "Exploiting Contextuality in Variational Quantum Eigensolvers," contributed talk @ QIP 2021 (24th Annual Conference on Quantum Information Processing) (2/1/21). Joint work with Andrew Tranter and Peter J. Love.
  • You can download my slides here download my extended abstract here and watch the video of the talk here
• "Exploiting Contextuality in Variational Quantum Algorithms," Oxford "Sheaf Talks" Seminar (12/1/20). Joint work with Andrew Tranter and Peter J. Love. Download slides
• "Classical Simulation of Noncontextual Pauli Hamiltonians," poster @ TQC 2020. Joint work with Andrew Tranter and Peter J. Love. Download pdf
• Cancelled due to COVID19: "Noncontextuality in Variational Quantum Algorithms," APS March Meeting 2020. Download slides
• "Noncontextuality as Classicality in Variational Quantum Eigensolvers," poster @ 2020 SQuInT Meeting. Joint work with Peter J. Love. Download pdf
• "Calibration for Single-Qubit Gates using Robust Phase Estimation," contributed talk @ APS March Meeting 2019 (3/8/2019). Joint work with Shelby Kimmel. Download slides
• "Efficient Quantum Compiling," poster @ 2016 APS New England Fall Meeting. Joint work with Frederick W. Strauch.
• "Quantum Entanglement: Enigma and Resource," Weekend for Williams Lecture, 10/3/2015. Joint work with William K. Wootters.
• "A Tight Bound on Entanglement for Two Qubits," poster @ 2015 Williams College Summer Science Poster Session. Joint work with William K. Wootters.