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Large-scale coherent Ising machine based on optoelectronic parametric oscillator
Qizhuang Cen1,2,3, Hao Ding4, Tengfei Hao1,2,3
1State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China.
Light, Science & Applications
|November 26, 2022
Summary
This 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.
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.
