Qu8its for quantum simulations of lattice quantum chromodynamics

We explore the utility of d = 8 qudits, qu8its, for quantum simulations of the dynamics of 1+1⁢D SU(3) lattice quantum chromodynamics, including a mapping for arbitrary number of flavors and lattice size and a reorganization of the Hamiltonian for efficient time evolution. Recent advances in parallel gate applications, along with the shorter application times of single-qudit operations compared with two-qudit operations, lead to significant projected advantages in quantum simulation fidelities and circuit depths using qu8its rather than qubits. The number of two-qudit entangling gates required for time evolution using qu8its is found to be more than a factor of 5 fewer than for qubits. Here, we anticipate that the developments presented in this work will enable improved quantum simulations to be performed using emerging quantum hardware.. Authors: Illa, Marc [University of Washington, Seattle, WA (United States); University of Washington] (ORCID:0000000335702849); Robin, Caroline E. P. [Universität Bielefeld (Germany); GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)] (ORCID:000000015487270X); Savage, Martin J. [University of Washington, Seattle, WA (United States)] (ORCID:0000000165027106). DOE Contract: SC0020970. Subjects: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; QCD; Qudits; lattice QCD; non-Abelian gauge theories; quantum algorithms; quantum simulation