National Lectures

Superoscillations (faster than Fourier) (p)revisited: vorticulture, noise, fractals

Band-limited functions can oscillate arbitrarily faster than their fastest Fourier component over arbitrarily long intervals: they can ‘superoscillate’. In physics, this 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. Speaker: Michael Berry (Melville Wills Professor of Physics (Emeritus) at the University of Bristol, UK)

Event type: National Lectures

National/International: National

Area: Physical Sciences

Contact details:

Focus:Superoscillations

Ministry/Deptt/Institution:International Centre for Theoretical Sciences ICTS), TIFR, Bengaluru

Venue & Location:Ramanujan Lecture Hall, ICTS Bangalore

Start date: 06-Dec-2018 12:00 AM

End date: 06-Dec-2018 12:00 AM