Improved Hardness Results for the Guided Local Hamiltonian Problem. - Sevag Gharibian; Ryu Hayakawa; François Le Gall; Tomoyuki Morimae (CoRR, 2022)

Quantum algorithm for persistent Betti numbers and topological data analysis. - Ryu Hayakawa (Quantum, 2022)

Improved Hardness Results for the Guided Local Hamiltonian Problem. - Chris Cade; Marten Folkertsma; Sevag Gharibian; Ryu Hayakawa; François Le Gall; Tomoyuki Morimae; Jordi Weggemans (ICALP, 2023)

Quantum computing and persistence in topological data analysis. - Casper Gyurik; Alexander Schmidhuber; Robbie King; Vedran Dunjko; Ryu Hayakawa (CoRR, 2024)