Events at Physics |
Events During the Week of July 2nd through July 9th, 2023
Monday, July 3rd, 2023
- No events scheduled
Tuesday, July 4th, 2023
- Academic Calendar
- Independence Day
- Abstract: *Note: actual end time may vary.* University offices closed. URL:
Wednesday, July 5th, 2023
- Outreach
- Wednesday Nite @ The Lab
- IceCube detection of neutrinos from a galaxy near, near by
- Time: 7:00 pm - 8:30 pm
- Place: 1111 Genetics/Biotech or sign up for the zoom link at go.wisc.edu/240r59
- Speaker: Justin Vandenbroucke, UW–Madison Physics / WIPAC
- Abstract: The IceCube Neutrino Observatory is a detector monitoring a billion tons of ice at the South Pole for energetic signals from across the cosmos. Led by the University of Wisconsin – Madison, it detects neutrinos, which are nearly massless subatomic particles that can travel large distances straight through matter. Because of this, neutrinos serve as super X-rays, carrying new information that is complementary to astronomy done with any type of photons or electromagnetic waves. IceCube has previously detected neutrinos from distant galaxies powered by giant black holes. We have now detected neutrinos from our own Galaxy, the Milky Way. I will describe how IceCube works and what it has unveiled so far about both the distant Universe and our own cosmic neighborhood.
- Host: Tom Zinnen
Thursday, July 6th, 2023
- Graduate Program Event
- Preliminary Exam
- Toward implementation of protected charge-parity qubits
- Time: 11:00 am - 1:00 pm
- Place: 5280 Chamberlin
- Speaker: Abigail Shearrow, Department of Physics Graduate Student
- Abstract: Topologically protected qubits are an area of growing interest and active research, with the potential for orders-of-magnitude improvements in coherence compared to conventional qubits. One such protected qubit is the charge-parity (C-parity) qubit, which consists of a pi-periodic Josephson element shunted by a large capacitance. Here, we implement imperfect pi-elements as "plaquettes" consisting of two arms in parallel, each arm incorporating a small-area Josephson junction in series with a large inductor. When the plaquette is biased at half a flux quantum, the first harmonic of the Josephson energy is suppressed and the second harmonic, which is proportional to cos(2φ), remains. While individual plaquettes are not protected, protection scales exponentially with the number of plaquettes concatenated in series. In this talk we describe the design, fabrication, and characterization of plaquette devices.
- Summer Recess
- Time: 12:30 pm - 1:00 pm
- Place: Bascom Hill outside Birge
- Speaker: Sharon Kahn
- Abstract: Come take a break and play from 12:30-1 on Bascom Hill (outside of Birge)! Some of us will be walking up, leaving from the Charter St entrance ~12:25 – feel free to walk with us!
Cornhole, ladder toss, frisbee, juice boxes. . . .
Hope you’ll join us!
Friday, July 7th, 2023
- No events scheduled