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Related Experiment Video

Updated: Aug 19, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Large-scale coherent Ising machine based on optoelectronic parametric oscillator.

Qizhuang Cen^1,2,3, Hao Ding⁴, Tengfei Hao^1,2,3

¹State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China.

Light, Science & Applications

|November 26, 2022

Summary

This summary is machine-generated.

This study introduces a stable, large-scale Ising machine using microwave pulses. This new approach offers a low-cost, accurate method for solving complex optimization problems.

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Area of Science:

Physics
Computer Science
Engineering

Background:

Analog Ising machines offer potential for accelerating combinatorial optimization.
Existing systems like superconducting qubits and optical pulses face spin stability challenges due to low temperatures or phase sensitivity.

Purpose of the Study:

To propose a novel Ising machine implementation using stable microwave pulses.
To demonstrate a large-scale, high-stability Ising machine for practical optimization.

Main Methods:

Utilizing short microwave pulses from an optoelectronic parametric oscillator as artificial spins.
Implementing a 25,600-spin Ising machine architecture.

Main Results:

Achieved high spin stability and continuous, stable operation for hours.
Demonstrated compatibility with high-speed electronic devices for programmability.

Conclusions:

The proposed microwave pulse-based Ising machine provides a stable and scalable solution.
This approach paves the way for low-cost, accurate, and easily implemented real-world optimization problem-solving.