Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster 3: Quantengase, Ultrakalte Atome, Ultrakalte Moleküle, Materiewellen Optik, Präzisionsmessungen, Metrologie
Q 57.109: Poster
Donnerstag, 17. März 2011, 16:30–19:30, P1
A Modern Michelson-Morley Experiment Using Cryogenic Sapphire Microwave Oscillators — •Stephen Parker1, Paul Stanwix1, Michael Tobar1, John Hartnett1, Eugene Ivanov1, Moritz Nagel2, and Achim Peters2 — 1School of Physics, The University Of Western Australia, Crawley 6009, Western Australia, Australia — 2Humboldt-Universität zu Berlin, Institut für Physik, AG Optische Metrologie, Newtonstr. 15, 12489 Berlin
Lorentz Invariance is a fundamental component of General Relativity and the Standard Model of Particle Physics.We describe the details of our latest Michelson-Morley experiment that has recently been set up at Humboldt University in Berlin. The experiment compares the resonant frequencies of two orthogonally aligned cryogenic sapphire microwave oscillators that are actively rotated in the laboratory. A standing wave whispering gallery mode is excited in the cryogenic sapphire oscillators which resonates at 13 GHz. They exhibit a frequency stability on the order of 10−16 for integration times from 10 - 40 seconds (approximately the period of active rotation). This low stability increases the sensitivity of the experiment to violations of Lorentz Invariance which we express as bounds on coefficients from the Standard Model Extension. The experiment will be run for a full year ending in December 2011, after which it will be combined with a set of optical sapphire resonators for a joint experiment with the optical metrology group at Humboldt University.