Phys.org February 23, 2024
Vertical cavity surface-emitting (VCSEL) arrays offer an attractive platform to develop a photonic Ising computer due to their scalability and compact physical size. Researchers in Singapore computationally investigated the performance of this approach by extending the spin-flip model to describe a system of mutually injection locked VCSELs for 2-, 3-, and 4-bit Ising problems. Numerical simulations demonstrated that the modeled system solved the given Ising problems significantly better than chance, with critical parameters in the model identified as crucial for achieving an unbiased Ising solver. According to the researchers the quantum well gain anisotropy parameter as well as the ratio of phase anisotropy to decay rate of the local carrier number caused the system to favor particular Ising configurations over others, but this may not prohibit the system from reaching the ground state… read more. Open Access TECHNICAL ARTICLE
Proposed VCSEL-based injection-locked Ising solver, … Credit: Journal of Optical Microsystems, Vol. 4, Issue 1, 014501 (December 2023)Â