Information carried in the structure of light
Eileen Otte, The Institute of Optics, University of Rochester
This is a joint seminar with the Institute of Optics. Please note that the weekday and time of the talk are different from the usual ones
If you are interested in joining the reception after the talk, please register also here

Abstract
When light interacts with media, it is spatially structured in its amplitude, phase, polarization, angular momenta, and more, depending on the properties of the media. With its interaction-dependent characteristics, this so-called structured light represents a powerful information carrier from the macro- down to the nanoscale. For instance, sunlight scattered in the blue daylight sky shows intriguing polarization patterns, carrying information about the location of the sun. Although we are not able to see this pattern, insects such as bees can use it as a means of orientation. At much smaller, molecular scales, we can observe that, e.g., the emission pattern of a single fluorescent molecule is highly dependent on its dipolar orientation. Hence, decoding this pattern can provide access to nanoscale features of molecules.
Inversely, we can also choose to encode information into structured light. In this case, structured light becomes an advanced tool in a broad range of applications, including optical micro- and nano-manipulation, material machining, and classical as well as quantum communication and encryption. For example, light fields spatially structured in phase and polarization can be used to increase the dimension of quantum key distribution schemes. This high-dimensional approach enables a higher information capacity per photon, greater resilience to noise, and longer transmission distances.
Although the diverse properties of structured light are widely known, its potential has not been fully exploited yet – especially if it comes to non-paraxial structured light and its interactions. We will explore how encoding and decoding information carried in structured light, especially in the non-paraxial regime, opens new avenues for advancing cutting-edge applications and technologies.
Bio
Dr. Eileen Otte joined the Institute of Optics at the University of Rochester as a new faculty member in January 2025. Before, she was a postdoctoral fellow at the Geballe Laboratory for Advanced Materials (GLAM), Stanford University, advised by Prof. Mark Brongersma. Eileen’s research concentrates on the fundamental properties and diverse applications of structured light fields, in areas such as singular optics, nanoscale imaging and sensing, quantum cryptography, optical manipulation, and more. In her postdoctoral research, Eileen focused on nanoscale light-matter interactions, combining structured light and nanophotonics.
Eileen has coauthored 24 peer-reviewed articles, including 14 first author publications. Her PhD work, performed at the University of Muenster, Germany, and University of the Witwatersrand, South Africa, was honored with summa cum laude as well as the WWU Dissertation Award, and published as a book in the Springer Theses series. She has also received the Research Award 2020 of the Industrial Club Duesseldorf, was appointed a junior class member of the NRW Academy of Sciences, Humanities, and the Arts, and was listed among the Emerging Leaders 2021 and Emerging Talents 2021 of IOP’s Journal of Optics. Her postdoctoral research was supported by the PRIME program of the German Academic Exchange Service as well as the GLAM Postdoctoral Fellowship.
Parking and location
The talk will be held at UR River Campus, Goergen 101. Parking is available in the lot across the street in Intercampus Drive Lot, and is free for talk attendees (no pass needed).
After-talk reception
A reception will be held after the talk in the Goergen Atrium. If you'd like to join the reception, please make sure to register here for a headcount.