Events During the Week of January 19th through January 26th, 2025
Monday, January 20th, 2025
- Academic Calendar
- Martin Luther King Jr. Day
- Abstract: *Note: actual end time may vary.* No classes\; university offices are closed..
- Academic Calendar
- Graduate School Spring 2025: Spring Degree Window Period deadline for doctoral students
- Time: 11:55 pm - 12:55 am
- Abstract: CONTACT: 262-2433, gsacserv@grad.wisc.edu
Tuesday, January 21st, 2025
- Academic Calendar
- Spring semester instruction begins
- Abstract: *Note: actual end time may vary.*
Wednesday, January 22nd, 2025
- Department Meeting
- Time: 12:15 pm - 1:00 pm
- Place: B343 Sterling Hall
- Speaker: Kevin Black, UW - Madison
- Host: Kevin Black
Thursday, January 23rd, 2025
- Astronomy Colloquium
- Particle Acceleration by Astrophysical Shocks: A Microphysical Perspective
- Time: 3:30 pm - 4:30 pm
- Place: 4421 Sterling Hall
- Speaker: Karol Fulat, UW-Madison
- Abstract: Shock waves are ubiquitous astrophysical phenomena associated with powerful sources, e.g., supernovae, active galactic nuclei, and gamma-ray bursts. These shocks are collisionless, meaning that the energy is transferred between particles, electromagnetic fields, and bulk flows by wave-particle interactions, rather than binary Coulomb collisions. Such shocks are known to be efficient accelerators of charged particles and are plausible sites of cosmic ray production. However, the primary acceleration mechanism, diffusive shock acceleration, does not describe physics on particle kinetic scales. Since shock acceleration is in general a nonlinear and multiscale process, particle-scale phenomena are crucial. I will discuss the shock microphysics and particle acceleration mechanisms revealed by fully kinetic numerical simulations.
- Host: Melinda Soares-Furtado
Friday, January 24th, 2025
- Physics Department Colloquium
- Solid-state spin-photon interfaces for quantum information processing
- Time: 3:30 pm - 5:00 pm
- Place: Discovery Building, DeLuca Forum
- Speaker: Peter Lodahl, Niels Bohr Institute, University of Copenhagen
- Abstract:
Semiconductor quantum dots embedded in photonic nanostructures offer a highly efficient and coherent deterministic photon-emitter interface enabling on-demand single-photon sources and multi-photon entanglement sources. We discuss the fundamental operational principles of these devices and introduce a protocol of deterministic entanglement generation by controlling a single spin in the quantum dot. We will present the experimental state-of-the-art of multi-photon entanglement generation including the realization of photon fusion, which is a primitive for fusion-based quantum computing. Finally, we discuss potential applications of this novel hardware for quantum communication and photonic quantum computing.
This event starts at 3:30pm with refreshments. The invited presentation starts at 4pm.
- Host: Mark Saffman