Work

Three Strongly Coupled Kerr Parametric Oscillators Forming a Boltzmann Machine

Year: 2025

Type: article

Abstract: Coupled Kerr parametric oscillators (KPOs) are a promising resource for classical and quantum analog computation, for example to find the ground state of Ising Hamiltonians. Yet, the state space of strongly coupled KPO networks is very involved. As such, their phase diagram sometimes features either too few or too many states, including some that cannot be mapped to Ising spin configurations. This complexity makes it challenging to find and meet the conditions under which an analog optimization algorithm can be successful. Here, we demonstrate how to use three strongly coupled KPOs as a simulator for an Ising Hamiltonian, and estimate its ground state using a Boltzmann sampling measurement. While fully classical, our Letter is directly relevant for quantum systems operating on coherent states.

Source: Physical Review Letters

DOI: 10.1103/npp4-b1xb

Authors: Gabriel Margiani, Orjan Ameye, Oded Zilberberg, Alexander Eichler

Institutions: ETH Zurich, University of Konstanz

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Awards: G1281076096, Quantenentwickelte Systeme