When Light Breaks Symmetry: “Exceptional” Effects in Kerr Resonators”

Abstract: Spontaneous symmetry breaking (SSB) refers to the phenomenon where a system transitions from a symmetric to an asymmetric state due to an infinitesimally small change in a parameter. In this seminar, SSB will be explored in the context of optical Kerr resonators – nonlinear devices with wide-ranging applications, including frequency comb generation (optical “rulers”), gyroscopes, polarization control, random number generation, and all-optical computing. Designed for a general physics audience, this talk begins by introducing the fundamental concepts behind SSB and Kerr resonators. It then explores symmetry breaking between two – and later four – circulating light fields within these resonators. A central topic will be the formation and behavior of Temporal Cavity Solitons (TCS), localized pulses that persist within the resonator. Their role in SSB and in the creation of optical frequency combs will be discussed in detail. If time permits, the talk will conclude with highlights from recent research, including the dynamics of coupled resonator systems, systems where TCS structures can interact – effectively “communicating” to create collective system behavior – and an introduction to the newly discovered faticon subset of <a href="http://solitons.

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Co-sponsored by: Prof. Nicolas Quesada

Speaker(s):
Lewis Hill

Agenda:
11am – 12pm: Technical Seminar

3:00pm – 4:00pm: Student Development Session

Maximising Your Career Potential During Your University Studies and PhD

This session offers practical guidance and candid reflections for students aiming to make the most of their academic journey. Drawing from his own experiences, Dr. Lewis Hill shares the strategies that helped him stand out during his undergraduate and doctoral studies – and that accelerated his transition into a research leadership <a href="http://role.

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Topics include:

– Leveraging volunteer work and leadership roles
– Engaging with external stakeholders and industry
–
Winning competitive scholarships
– Building a strong online and professional presence
– Crafting an impactful CV
– Building international collaborations and networks
– Navigating transitions between academia and industry
– Dr. Hill will also reflect on lessons learned along the way—what worked, what didn’t, and what he might approach differently with the benefit of <a href="http://hindsight.

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The session is designed to benefit students at all levels, whether aiming for careers in academia, industry, or beyond. It concludes with an extended open Q&A where students can raise personalized questions and seek tailored <a href="http://advice.

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J. Armand Bombardier J-1035/J2074, Polytechnique Montréal, Montréal, Quebec, Canada, H3T 1J4