Bulletin of the American Physical Society
20th Annual Meeting of the APS Northwest Section
Volume 64, Number 9
Thursday–Saturday, May 16–18, 2019; Western Washington University, Bellingham, Washington
Session D1: Atomic, Molecular, and Optical II |
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Chair: Jeffrey McGuirk, Simon Fraser University Room: Viking Union 462A |
Friday, May 17, 2019 3:30PM - 4:00PM |
D1.00001: Optomechanics with a Particle in a Magneto-Gravitational Trap Invited Speaker: Brian D'Urso Optomechanical systems consisting of a levitated object whose motion is optically measured or controlled are attractive for their simplicity and extreme isolation from their environment. We are pursuing several experiments with microparticles in magneto-gravitational traps, which use a combination of diamagnetism and the earth's gravity. First, the center-of-mass motion of the particle can be cooled to temperatures far below the ambient temperature using feedback, potentially leading to fundamental tests of quantum mechanics. Second, the change in the frequency of oscillation of the particle under the influence of field masses can be used to measure the Newtonian constant of gravitation. Finally, trapped silicon carbide microcrystals hosting silicon vacancy centers may enable unprecedented force sensitivity and gravitational measurements in a tabletop experiment with macroscopic quantum superposition states. [Preview Abstract] |
Friday, May 17, 2019 4:00PM - 4:12PM |
D1.00002: Effects of Wavelength Variation on Localized Photoemission in Triangular Gold Antennas Christopher Scheffler Photoemission electron microscopy (PEEM) has been used to image nanometer scale plasmonic responses in micron-sized plasmonic devices. With PEEM, optical responses can be characterized in detail, aiding in the development of new types of plasmonic structures. In thin, triangular gold platelets surface plasmons can be excited and concentrated within specific regions of the material. In this regard, the platelets act as receiver antennas by converting the incident light into localized excitations in specific regions of the gold platelets. By varying the wavelength of the incident light, the brightness of the excited spots can be changed, and the electron emission can effectively be switched on or off for a specific region. These experimental findings are directly observed in PEEM imaging and are quantitatively evaluated using a finite-element method (FEM). The results show that wavelength change is a feasible and effective mechanism for controlling the localized field intensity as well as the photoemission yield. [Preview Abstract] |
Friday, May 17, 2019 4:12PM - 4:24PM |
D1.00003: Quantum Dynamics Between Quantum Optics and Quantum Information Jean-Francois Van Huele Quantum optics carefully describes different quantum states of light and suggests intelligent ways to control them for a variety of useful applications. Quantum information studies the storage and manipulation of information at the quantum level for usage in quantum technology. Underlying all this are physical interactions and time evolutions described by quantum mechanical models and operator algebra techniques which lend themselves to research projects at the undergraduate level. In this presentation I will survey the field and present some examples from student encounters with squeezing and Schr\"{o}dinger cats, experienced during the Research for Undergraduate (REU) summer program at Brigham Young University. [Preview Abstract] |
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