Colloquium Event

Video From Jack Harris, Yale University - “Measuring the eigenvalue braids & knots near higher-order exceptional points”

Date
Tue April 5th 2022, 3:30pm
Location
Hewlett Teaching Center, Rm. 200

 

Stanford University

 

APPLIED PHYSICS/PHYSICS COLLOQUIUM

 

Tuesday, April 5, 2022

3:30 p.m. on campus in Hewlett Teaching Center, Rm. 200

Refreshments served in Varian lobby at 4:45 p.m.

Face coverings required in classrooms

In-person attendance limited to Stanford affiliates

Zoom link: https://stanford.zoom.us/j/92042240101 
    Password: email dmoreau@stanford for password
 

Jack Harris

Yale University

 

“Measuring the eigenvalue braids & knots near higher-order exceptional points”

 

It may seem unlikely that rich mathematical structures still remain to be uncovered in small arrays of classical, linear oscillators. However, oscillators systems that include non-reciprocal elements and loss (or gain) have provided a number of surprises in recent years. My talk will describe how these systems are naturally connected to braid groups, knot theory, and other concepts from topology. I will give a pedagogical introduction to this topic (with lots of pictures!) and will present measurements of these phenomena in a cavity optomechanical system.