Wednesday, January 26, 2022 1:30pm to 2:30pm
About this Event
Lithium niobate is a superlative optical material due to its non-centrosymmetry and strong second-order nonlinearity. Bulk lithium niobate is also ubiquitous in nonlinear photonics and electro-optics. Recently available thin-film lithium niobate-on-insulator, as well as advancements in nanofabrication by several groups, have enabled the compact integration of multiple active device components on a single ship. With its strong electro-optic coefficient, a direct link between electrical driving and optical modulation can be achieved, which has lead to several new opportunities. This presentation will introduce several different photonic devices fabricated in the Lončar Lab based on lithium niobate-on-insulator, spanning classical and quantum regimes. In the classical domain, we demonstrate the generation of femtosecond pulses on-chip based on an electro-optic time lens. In the quantum domain, we demonstrate photonic devices offering interconversion between microwave and optical domains, amenable to act as a quantum transducer for superconducting qubits, as well as frequency-domain beamsplitters and couplers for individual photons. Each of these represent critical components to enable photonic quantum networking and processing in a single material platform.