Sir Michael Victor Berry, University of Bristol
Monday, September 24, 2018 - 4:30pm
Thaw Hall 11

Band-limited functions can oscillate arbitrarily faster than their fastest Fourier component over arbitrarily long intervals: they can ‘superoscillate’. In physics, this counterintuitive mathematical phenomenon is associated with almost-destructive interference, and occurs near phase singularities in optics and on the world’s ocean tides; and it is associated with quantum weak measurements. Where superoscillations occur, functions are exponentially weak and vulnerable to noise. They are an unexpectedly compact way of representing fractals. Superoscillations in red light can escape as gamma radiation.

Variations on a theme of Aharonov and Bohm
The Aharonov-Bohm effect (AB) concerns the role in quantum physics of the vector potential of an impenetrable line of magnetic flux. Its partial anticipation by Ehrenberg and Siday, in terms of interference, was an approximation whose wavefunction was not singlevalued, and whose connection with the singlevalued AB wave involves topology: waves winding round the flux (‘many-whirls representation’). AB is a fine illustration of idealization in physics. There are four AB effects, depending on whether the ...
Talk location: 7316 Wean Hall Berry Phase Seminar Fall 2018 Physics
Sir Michael Victor Berry
University of Bristol
Optica fantastica: images to illuminate the physics of light
A talk based entirely on pictures. Seas sparkle, sunshine generates rainbows, ships make waves. The explanations of these familiar phenomena are as abstract as elsewhere in physics, but pictures are helpful because in light and waves on water we can often see what we are thinking about. There are other optical phenomena that are not immediately perceived (associated with polarization or fine-scale interference, for example), but even with these we can generate pictures to help ...
Talk location: O'Hara Student Center Ballroom Fall 2018 Public Lecture
Sir Michael Victor Berry
University of Bristol
2018 Conference on Materials for Quantum Computing
Scope: Materials science and device physics in semiconductor-superconductor heterostructures, van der Waals materials, superconducting and topological qubits. Invited Speakers: Philip Kim (Harvard) Barbara Jones (IBM) Will Oliver (MIT) Xavier Waintal (CEA Grenoble) Roman Lutchyn (Microsoft) Javad Shabani (NYU) Manuel Houzet (CEA Grenoble) Jay Sau (Maryland) Sebastien Plissard (Toulouse) Andrea Young (UCSB) KT Law (HKUST) Christopher Palmstrom (UCSB) Peter Krogstrup (Copenhangen) Felix von Oppen (FU Berlin) Erik Bakkers (TU Eindhoven) David Cobden (Washington) Cristian Urbina (CEA ...
Talk location: University Club, University of Pittsburgh 123 University Pl, Pittsburgh, PA 15213 Fall 2018 Conference
Multiple Speakers
More Calendars

Condensed Matter Physics Seminars

Physics Colloquia

Pitt Chemistry Seminar Series

CMU Chemistry Seminar Series

Pitt Engineering Seminar Series

CMU Engineering Seminar Series

Materials Supergroup