Overview

The leaderboard is a database of user-generated solutions to optical/photonic design challenges from the invrs-gym. The leaderboard tracks key quantities for each solution related to the quality and degree of manufacturability:

• Performance metric: this is an eval metric defined uniquely for each challenge. This may be a physically meaningful quantity (such as efficiency), or a synthetic quantity that balances multiple objectives. A higher eval metric corresponds to a more desirable solution.

• Minimum length scale: the minimum width and spacing of features in each design are measured using the imageruler package. The smaller of these two is the minimum length scale. In general, designs with larger minimum length scales are more easily manufactured.

High-quality, highly-manufacturable solutions to gym challenges can be of practical value. Many gym challenges are based on real-world photonic/optical design challenges—in areas such as color-filter-free imaging, large-area metalenses, and quantum information processing—and solutions can be directly fabricated. In fact, many solutions on the leaderboard have already been manufactured and reported in the scientific literature.

Solutions to the meta-atom library challenge from (a)-(c) “Dispersion-engineered metasurfaces reaching broadband 90% relative diffraction efficiency” by Chen et al. and (d) submitted by @mfschubert. The right panel is a SEM image of a fabricated metagrating using design (a).

Therefore, algorithms which reliably obtain high-quality, manufacturable solutions to gym challenges are valuable. The joint purpose of the invrs-gym and leaderboard are to aid and accelerate the development of such algorithms.