Bulletin of the American Physical Society
19th Annual Meeting of the APS Northwest Section
Volume 63, Number 6
Thursday–Saturday, May 31–June 2 2018; Tacoma, Washington
Session A1: Plenary Session I |
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Chair: John Orrell, Pacific Northwest National Laboratory Room: Music Building Schneebeck Concert Hall |
Friday, June 1, 2018 8:20AM - 8:30AM |
A1.00001: Welcome |
Friday, June 1, 2018 8:30AM - 9:05AM |
A1.00002: DNA computing and DNA information storage Invited Speaker: Georg Seelig Abstract not available. [Preview Abstract] |
Friday, June 1, 2018 9:05AM - 9:40AM |
A1.00003: A Photonic Link for Donor Spin Qubits in Silicon Invited Speaker: Stephanie Simmons Atomically identical donor spin qubits in silicon offer excellent native quantum properties, which match or outperform many qubit rivals. To scale up such systems it would be advantageous to connect silicon donor spin qubits in a cavity-QED architecture. A few proposals in this direction introduce strong electric dipole interactions to the otherwise largely isolated spin qubit ground state in order to couple to superconducting cavities, however these strategies have unknown coherence properties. Here I present an alternative approach, which uses the built-in strong electric dipole (optical) transitions of singly-ionized double donors in silicon. These donors, such as chalcogen donors S+, Se+, and Te+, have the same ground-state spin Hamiltonians as the extensively studied shallow donors, yet offer mid-gap binding energies and mid-IR optical access to excited orbital states. This photonic link is spin-selective which could be harnessed to measure and couple bulk-like donor qubits using photonic cavity-QED at 4.2K. [Preview Abstract] |
Friday, June 1, 2018 9:40AM - 10:15AM |
A1.00004: Teaching physics sense-making to physics majors Invited Speaker: Elizabeth Gire A physicist's job is to make sense of the universe. Therefore, sense making ought to be at the heart of how we train physics students. As instructors, we are delighted - even thrilled - when students demonstrate their ability to use physics concepts to make explanations or interpret mathematical expressions physically. However, although we physicists value this sense making, our instruction fails to feature it. Too often, our reasoning is not made visible to students, and even when it is, students view sense making as something that physicists do but that students need not do. Our team has been working on how to incorporate explicit instruction about physics sense making into a sophomore-level mechanics course. I will discuss what we have learned about student sense making and how to encourage a sense-making habit. This discussion draws from analysis of interviews, written homework and exam problems, and a pre/post assessment that is in development. [Preview Abstract] |
Friday, June 1, 2018 10:15AM - 10:45AM |
A1.00005: Break |
Friday, June 1, 2018 10:45AM - 11:20AM |
A1.00006: GW170817: Astronomy's First Talkie Invited Speaker: Ben Farr On August 25, 2017, the LIGO observatories ended their second observing run (O2). Starting on November 30, 2016, O2 had progressed relatively uneventfully for ~260 calendar days until August 17, 2017, when LIGO detected its first binary neutron star merger, GW170817. It was LIGO's first binary neutron star detection, and it was also detected by telescopes across the electromagnetic spectrum, emphatically kicking off the era of gravitational-wave multi-messenger astronomy. With more than 70 ground- and space-based observatories joining in the discovery, GW170817 quickly became one of the most observed transients in the history of astronomy. I will discuss some of what GW170817 and its EM counterpart has taught us (so far) about neutron star collisions, the expansion of the universe, and fundamental physics. [Preview Abstract] |
Friday, June 1, 2018 11:20AM - 11:55AM |
A1.00007: Continuum dynamics and reactions in light nuclei Invited Speaker: Sofia Quaglioni Atomic nuclei are the heart of matter and the fuel of stars. An overarching goal of nuclear physics is to arrive at the comprehensive understanding – in terms of the laws of quantum mechanics and the underlying theory of the strong force (quantum chromodynamics) – of atomic nuclei and their interactions, and to use this understanding to accurately predict properties that are difficult to measure or simply inaccessible to experiment but play a fundamental role in explaining the inner workings of the Universe or are critical to the national security. This requires explaining a wide variety of phenomena: from how neutrons and protons organize themselves to form stable bound states, rare unstable isotopes, and transient resonances, to how nuclei dynamically interact with one another during a reaction. I will give examples of how powerful techniques for the description of the nuclear force and the solution of the nuclear quantum many-body problem combined with cutting-edge high-performance computing are enabling the realization of this goal in light nuclei. [Preview Abstract] |
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