Ivano Tavernelli

Jan 17, 2025 | nature.com | Takis Angelides |Pranay Naredi |Arianna Crippa |Karl Jansen |Stefan Kuhn |Stefan Kühn | +1 more

AbstractWe explore the first-order phase transition in the lattice Schwinger model in the presence of a topological θ-term by means of the variational quantum eigensolver (VQE). Using two different fermion discretizations, Wilson and staggered fermions, we develop parametric ansatz circuits suitable for both discretizations, and compare their performance by simulating classically an ideal VQE optimization in the absence of noise.

Oct 25, 2023 | nature.com | Yueze Gao |Florian Albrecht |Kirsten Christensen |Ivano Tavernelli |Harry Anderson |Max Rossmannek

AbstractSynthetic carbon allotropes such as graphene1, carbon nanotubes2 and fullerenes3 have revolutionized materials science and led to new technologies. Many hypothetical carbon allotropes have been discussed4, but few have been studied experimentally. Recently, unconventional synthetic strategies such as dynamic covalent chemistry5 and on-surface synthesis6 have been used to create new forms of carbon, including γ-graphyne7, fullerene polymers8, biphenylene networks9 and cyclocarbons10,11.