Photonic decision making using optical frequency difference detection in mutually-coupled semiconductor lasers

Area of Science:

• Optics and Photonics
• Computational Science
• Laser Physics

Background:

• Photonic accelerators offer advantages over traditional electronics due to the speed of light.
• Decision-making in these systems often relies on chaotic synchronization of semiconductor lasers.
• Current methods using cross-correlation are computationally intensive and require significant memory.

Purpose of the Study:

• To develop a more efficient decision-making strategy for photonic accelerators.
• To overcome the limitations of high computational complexity and memory requirements in existing methods.
• To enable decision making via delayed chaotic synchronization with reduced resource demands.

Main Methods:

• Proposed a novel frequency-based judgment method utilizing the optical frequency difference.
• Employed numerical simulations to test the proposed method.
• Conducted experimental validation to confirm the simulation results.

Main Results:

• The frequency-based method successfully enabled decision making via delayed chaotic synchronization.
• Demonstrated significant reductions in computational cost.
• Showcased substantial decreases in memory usage compared to cross-correlation methods.

Conclusions:

• The proposed frequency-based judgment method is a viable and efficient alternative for decision making in photonic accelerators.
• This technique offers a practical solution for overcoming the computational bottlenecks of conventional approaches.
• The findings pave the way for more scalable and resource-efficient photonic computing systems.