Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 30: Quantum effects
Q 30.2: Vortrag
Dienstag, 19. März 2013, 14:30–14:45, F 128
Enhancing the sensitivity of chemical magnetometers — •Markus Tiersch1,2, Gian Giacomo Guerreschi1,2, Ulrich E. Steiner3, and Hans J. Briegel1,2 — 1University of Innsbruck, Austria — 2Institute for Quantum Optics and Quantum Information, Innsbruck, Austria — 3Fachbereich Chemie, University of Konstanz, Germany
Magnetic field effects of chemical reactions that are explained by the radical pair mechanism can be used for chemical magnetometry and constitute the basis of a primary hypothesis for animal magnetoreception. We propose a new experimental approach based on molecular photoswitches to achieve additional control of these chemical reactions at the level of the recombination dynamics, and thus to allow for short-time resolution of the spin dynamics. This proposal enables experiments to test some of the standard assumptions of the radical pair model, and it improves the sensitivity of a model system for a chemical magnetometer by two orders of magnitude. For the experimentally well-studied model system, where the radical pair is formed by pyrene (Py) with N,N-dimethylaniline (DMA), we discuss how signatures of entanglement can be used to measure magnetic fields.