3 papers
physics.optics2025
Low-loss, fabrication-tolerant, and highly-tunable Sagnac loop reflectors and Fabry-Pérot cavities on thin-film lithium niobate
Luke Qi, Ali Khalatpour, Jason Herrmann +8
We present low-loss () and power-efficient Mach-Zehnder interferometers (MZIs) on thin-film lithium niobate. To accurately measure low MZI losses, we develop a self-calibra…
physics.optics2025
Roughness-Limited Performance in Ultra-Low-Loss Lithium Niobate Cavities
Ali Khalatpour, Luke Qi, Martin M. Fejer +1
Achieving low optical loss is critical for scaling complex photonic systems. Thin-film lithium niobate (TFLN) offers strong electro-optic and nonlinear properties in a compact plat…
cond-mat.mes-hall2025
Surface and Bulk Two-Level System Losses in Lithium Niobate Acoustic Resonators
Rachel G. Gruenke-Freudenstein, Erik Szakiel, Gitanjali P. Multani +7
Lithium niobate (LN) is a promising material for building acoustic resonators used in quantum applications, but its performance is limited by poorly understood material defects cal…