J.K. Gimzewski, T.A. Jung, et al.
Surface Science
We propose an improved quantum algorithm to calculate the Green's function through real-time propagation, and use it to compute the retarded Green's function for the two-, three-, and four-site Hubbard models. This protocol significantly reduces the number of controlled operations when compared to those previously suggested in literature. Such reduction is quite remarkable when considering the two-site Hubbard model, for which we show that it is possible to obtain the exact time propagation of the |N±1) states by exponentiating one single Pauli component of the Hamiltonian, allowing us to perform the calculations on an actual superconducting quantum processor.
J.K. Gimzewski, T.A. Jung, et al.
Surface Science
Gregory Czap, Kyungju Noh, et al.
APS Global Physics Summit 2025
Revanth Kodoru, Atanu Saha, et al.
arXiv
Lawrence Suchow, Norman R. Stemple
JES