Spin Model for Quantum Annealing with Kerr Parametric Oscillators

TL;DR

This paper introduces a spin model for quantum annealing using Kerr parametric oscillators, enabling efficient simulation and optimization of hardware with coherent states.

Contribution

The paper presents a novel effective spin-1/2 model for coherent-state quantum annealing, bridging the gap between complex quantum states and practical simulation.

Findings

Model accurately predicts experimental outcomes

Enables efficient simulation of large photon-number states

Facilitates hardware optimization for quantum annealing

Abstract

Coherent states offer a promising path for near-term quantum computing due to their inherent protection against bit-flip noise. However, their large photon numbers can be challenging for numerical simulation. This paper introduces an effective model, representing coherent-state quantum annealing using spin-1/2 degrees of freedom. We demonstrate that this model yields accurate predictions for realistic experimental settings and can therefore serve as a practical tool for optimizing future quantum hardware.