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Events During the Week of October 26th through November 2nd, 2025

Monday, October 27th, 2025

Plasma Physics (Physics/ECE/NE 922) Seminar
Title to be announced
Time: 12:00 pm - 1:00 pm
Place: 2241 Chamberlin Hall
Speaker: Carlos Rovero-Talamas, UMBC
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Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 1:00 pm - 2:30 pm
Place: Chamberlin 5280
Speaker: Pouya Asadi, UC, Santa Cruz
Abstract: TBA
Host: Lisa L Everett
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Preliminary Exam
Scalable autotuning of high-temperature quantum dot spin qubits
Time: 2:00 pm - 4:00 pm
Place:
Speaker: Tyler Kovach
Abstract: Developing automatic, scalable hardware control is a universal challenge when assembling the physical qubit layer of a large quantum computer. For quantum dot spin qubits—a semiconductor-based platform notable for its high device tunability and its compact size—one key hurdle arises from device non-uniformity. An example of this non-uniformity is the trapped charges in the device’s oxide layers, which induce offset voltage shifts on gate electrodes. These unknown offsets need to be accounted for and calibrated away before any qubits are formed. In this talk, I will introduce a streamlined, five-step physically intuitive algorithm for initializing and bootstrapping these devices, allowing for fully autonomous calibration and characterization. Next, I will demonstrate this methodology experimentally at a high temperature of 1.3K using our in-house developed automatic tuning system, BATIS (Bootstrapping Autonomously Testing Initialization System), to configure a four quantum dot Si/SiGe hetero-structure device. Finally, I will discuss our on-going development of FAlCon (Framework for Algorithmic Control), a soon-to-be open-source software platform designed to facilitate the design, deployment, sharing, and testing of quantum dot tuning algorithms. FAlCon’s platform-agnostic architecture addresses a critical bottleneck in quantum dot scalability, paving the way for the broader implementation of large quantum dot arrays.
Host: Albrecht Karle
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Tuesday, October 28th, 2025

No events scheduled

Wednesday, October 29th, 2025

Department Meeting
Time: 12:15 pm - 1:15 pm
Place: B343 Sterling
Speaker: Kevin Black, UW-Madison
Host: Kevin Black
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Thursday, October 30th, 2025

No events scheduled

Friday, October 31st, 2025

Preliminary Exam
Performance Characterization of the IceCube Upgrade and Detection of First Neutrinos
Time: 1:15 pm - 3:15 pm
Place: Chamberlin Hall Room 5310
Speaker: Delaney Butterfield
Abstract: The IceCube Upgrade is an extension of the existing IceCube Neutrino Observatory and will be deployed in the upcoming 2025/2026 austral summer. The instrumentation volume, consisting of seven new strings, will be 200 times more densely instrumented than IceCube to target lower energy atmospheric neutrino interactions. The additional strings will feature new optical modules, which will more than triple the number of PMT channels in the detector. In this presentation, I describe the new detector configuration and discuss my work on the low-level data flow. More PMT channels and more sensitive modules result in a higher data rate up the long cables of the detector leading to the surface. To reduce this data rate, we have introduced a new step in the data flow known as the "Pre-Trigger." Unique to the Upgrade, the Pre-Trigger represents the first step in deciding which PMT signals to keep when building events. In addition to my work on the in-ice data flow, I will present my initial studies on characterizing the early data we expect to see from the new strings, and my work towards performing a full analysis of a detector verification and commissioning sample of new data from the IceCube Upgrade. This analysis will highlight atmospheric neutrino events in the 3-50 GeV energy range which we would not see without the Upgrade, and how this early dataset will set the stage for future analyses.
Host: Albrecht Karle
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Physics Department Colloquium
Title to be announced
Time: 3:30 pm - 4:30 pm
Place: Chamberlin 2241
Speaker: Imre Bartos, University of Florida
Host: Ke Fang
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