Subsampling and Subspace-embeddings in Quantum Algorithms

QuICS Special Seminar

Leonard Wossnig (University College London)
May 16, 2018
ATL 3100A

Following the works of Drineas et al. (2004), Randomised Numerical Linear Algebra (RNLA) applications have enjoyed a increasing surge of interest in the classical algorithms community. Following their success we recently demonstrated a classical algorithm based on the Nystroem method which allows us to efficiently simulate dynamics of quantum system with specific structural conditions. We briefly introduce the most basic RNLA algorithm by Drineas et al. and then outline our own recent work. We follow with a discussion of potential application of related methods, including spectral sparsification, in quantum algorithms for Hamiltonian Simulation and quantum linear systems; We finish with a short description of own current work related to spectral sparsification (Spielmann & Teng 2011) for Hamiltonian simulation.