Scattering amplitudes from quantum hardware a la RESOs

Abstract:We report the first quantum-hardware implementation of Real-time Estimators for Scattering Observables (RESOs). The physical model is a one-dimensional lattice theory of non-relativistic spin-1/2 fermions with a single contact interaction. The lattice sizes studied are up to $N_x=54$ lattice sites and up to $20$ time steps. Spacetime correlation functions were computed on IBM's quantum computers, using $109$ qubits with $10,806$ CZ gates applied, reaching a two-qubit gate depth of $246$. We demonstrate how to study bound states and extract scattering amplitudes from these correlation functions.

arXiv:2609.31889 [quant-ph]

(or arXiv:2609.31889v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2609.31889 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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