2 papers
physics.optics2026
Mode Switching Through Exceptional Points Induced by Lasing-Inversion Coupling
Xingwei Gao, Cheng Guo, David Burghoff
The gain-loss coupling in optical cavities induces exceptional points (EPs), where two optical modes coalesce. The large modal overlap near an EP intensifies gain competition, favo…
quant-ph2023
Record Photon Information Efficiency with Optical Clock Transmission and Recovery of 12.5 bits/photon over an Optical Channel with 77 dB Loss
René-Jean Essiambre, Cheng Guo, Sai Kanth Dacha +18
We experimentally demonstrate optical detection at 12.5~bits per incident photon, 9.4~dB higher than the theoretical limit of conventional coherent detection. A single laser transm…