Programmable Quantum Annealing Architectures with Ising Quantum Wires

TL;DR

This paper proposes a novel quantum annealing architecture using Ising quantum wires in 3D atomic platforms, enabling programmable long-range interactions for solving complex optimization problems.

Contribution

It introduces a new architecture utilizing Ising quantum wires in 3D atomic systems to implement programmable long-range interactions in quantum annealing.

Findings

Effective all-to-all Ising interactions can be realized with local 3D lattice engineering.

The architecture can solve Max-Cut and prime factorization problems.

Potential for scaling to large atom-based quantum systems.

Abstract

Quantum annealing aims at solving optimization problems efficiently by preparing the ground state of an Ising spin-Hamiltonian quantum mechanically. A prerequisite of building a quantum annealer is the implementation of programmable long-range two-, three- or multi-spin Ising interactions. We discuss an architecture, where the required spin interactions are implemented via two-port, or in general multi-port quantum Ising wires connecting the spins of interest. This quantum annealing architecture of spins connected by Ising quantum wires can be realized by exploiting the three dimensional (3D) character of atomic platforms, including atoms in optical lattices and Rydberg tweezer arrays. The realization only requires engineering on-site terms and two-body interactions between nearest neighboring qubits. The locally coupled spin model on a 3D cubic lattice is sufficient to effectively produce arbitrary all-to-all coupled Ising Hamiltonians. We illustrate the approach for few spin devices solving Max-Cut and prime factorization problems, and discuss the potential scaling to large atom based systems.