Wisconsin Quantum Institute |
Events During the Week of January 25th through February 1st, 2026
Monday, January 26th, 2026
- No events scheduled
Tuesday, January 27th, 2026
- Coffee Hour
- Quantum Coffee Hour
- Time: 3:00 pm - 4:00 pm
- Place: Rm.5294, Chamberlin Hall
- Abstract: Please join us for the WQI Quantum Coffee today at 3PM in the Physics Faculty Lounge (Rm.5294 in Chamberlin Hall). This series, which takes place approximately every other Tuesday, aims to foster a casual and collaborative atmosphere where faculty, post-docs, students, and anyone with an interest in quantum information sciences can come together. There will be coffee and treats.
Wednesday, January 28th, 2026
- No events scheduled
Thursday, January 29th, 2026
- Wisconsin Quantum Institute Colloquium
- Oh, the Places Quantum Will Go!: Toward useful quantum simulation in chemistry and materials
- Time: 3:30 pm - 5:00 pm
- Place: Morgridge Hall, 7th floor Seminar Room
- Speaker: Matthew Otten, University of Wisconsin-Madison
- Abstract:
Chemistry and materials challenges such as corrosion, catalysis, and transition metal reactivity often come down to accurately solving strongly correlated electrons, which can exceed the practical limits of today’s best computers. Quantum computers promise a new route: represent and evolve many body quantum states directly on quantum hardware. A central question is when and for which problems this becomes useful, especially on early fault tolerant (error corrected) machines where resources remain limited. This talk gives an application-driven, end to end view of useful quantum simulation. I will describe how full stack resource estimation connects scientific targets to quantum algorithms and fault tolerant implementation, and how cross layer choices can dramatically change feasibility for realistic chemistry and materials problems. I will also emphasize the role of state of the art classical baselines in validating results, defining credible success criteria, and providing structured starting points that can reduce quantum overhead. The takeaway is a practical roadmap for identifying early targets and making claims of competitiveness testable.
This event starts at 3:30pm with refreshments, followed at 3:45pm by a short presentation by Jihyeon Park (Otten group) titled "'CANOE: Classically Assisted Non-Orthogonal Eigensolver". The invited presentation starts at 4pm.
- Host: Mark Saffman
Friday, January 30th, 2026
- Physics Department Colloquium
- Atomtricity: From Gauge Field Theory to Transistors for Matter Waves
- Time: 3:30 pm - 4:30 pm
- Place: Chamberlin 2241
- Speaker: Dana Z. Anderson, Infleqtion and University of Colorado, Boulder
- Abstract: Gauge fields arise within a rather abstract theoretical framework for addressing interactions among sets of identical particles; it is central particularly to high-energy particle physics and has recently become of interest to the AMO and quantum information physics communities. The canonical electronic transistor is a three-terminal device in which a weak signal can control a much stronger one. The transistor has a central role in nearly all modern electronics products. This talk takes a fast-moving yet scenic path starting with gauge field theory to describe the principles of transistors that operate on (ultracold) atoms rather than electrons. Historically gauge field theory was developed to understand the fundamental particles and forces of nature. Notably, Maxwell’s equations can be derived directly from a gauge field theory that incorporates the speed of light and the impedance of free space as empirical constraints (among a few others). Yet gauge field theory itself is agnostic as to whether particles and forces are or are not fundamental. We have applied it to identical neutral atoms that interact (such as ultracold 87Rb atoms) via van der Waals forces. Imposing the laws of non-relativistic quantum mechanics rather than the laws of Relativity as constraints to the theory leads to a set of matter wave duals to Maxwell’s equations. These ultimately lead to what one might refer to as the “laws of atomtricity” that are duals to the laws of electromagnetism. These laws enable one to define and study the mechanics of AC matter waves, i.e., waves that are associated with alternating particle currents. Their behavior is dramatically different than the more familiar matter waves associated with the time-independent Schrödinger equation. The laws of atomtricity naturally involve the concept of impedance, which concept leads to circuit elements, and particularly to transistors and transistor circuits that can be used to generate AC matter waves. Being an applied physicist, I cannot help but tell you how the new physics and matter wave circuits can be useful.
- Host: Mark Saffman