Physics Department Colloquia

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Events During the Week of May 1st through May 8th, 2022

Monday, May 2nd, 2022

No events scheduled

Tuesday, May 3rd, 2022

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Wednesday, May 4th, 2022

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Thursday, May 5th, 2022

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Friday, May 6th, 2022

The topology of tuning a non-Hermitian instrument: knots, braids, and exceptional points
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Jack Harris, Yale
Abstract: It may seem unlikely that rich mathematical structures still remain to be uncovered in small arrays of classical, linear oscillators. However, oscillators that combine non-reciprocal elements with 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 topological structures. 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.
Host: Shimon Kolkowitz
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