Publications (4)
Observation of Janus Chirality for Coherent Thermal Emission from Metasurfaces
Kaili Sun, Yangjian Cai, Maxim V. Gorkunov +2
Metasurfaces emerged as a powerful tool for controlling thermal radiation, yet achieving coherent emission with opposite circular handednesses remains a highly challenging problem.…
RAIDEN-R1: Improving Role-awareness of LLMs via GRPO with Verifiable Reward
Zongsheng Wang, Kaili Sun, Bowen Wu +3
Role-playing conversational agents (RPCAs) face persistent challenges in maintaining role consistency. To address this, we propose RAIDEN-R1, a novel reinforcement learning framewo…
One-dimensional quasi bound states in the continuum in the Ï~k space for nonlinear optical applications
Kaili Sun, Hui Jiang, Dmitry A. Bykov +4
The phenomenon of bound state in the continuum (BIC) with infinite quality factor and lifetime has emerged in recent years in photonics as a new tool of manipulating light-matter i…
Broadband-operational orbital angular momentum generation in nonlocal metasurfaces with maximum efficiency approaching 80%
Keren Wang, Kaili Sun, Jing Du +5
Nonlocal metasurfaces provide a compact route to generating momentum-space optical vortices but are limited by steep dispersion typically associated with high-quality (Q) factor re…