Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics IV
Q 58.45: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Quantum-inspired sensing of trapped particle kinematics — •Stefan Berg-Johansen1,2, Martin Neugebauer1,2, Peter Banzer1,2,3, Andrea Aiello1,2, Christoph Marquardt1,2, and Gerd Leuchs1,2,3 — 1Max Planck Institute for the Science of Light, Guenther-Scharowsky-Str. 1/Bldg. 24, D-91058 Erlangen, Germany — 2Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, Staudtstr. 7/B2, D-91058 Erlangen, Germany — 3Department of Physics, University of Ottawa, 25 Templeton, Ottawa, Ontario, K1N 6N5 Canada
Recently, it was demonstrated that the inseparable mode structure of radially polarized beams of light can be used for kinematic sensing with gigahertz temporal bandwidth [1]. The technique relies on the intrinsic correlations existing between the transverse spatial and polarisation degrees of freedom of vector beams, having a mathematical structure similar to that of entangled quantum systems [2]. The high temporal resolution made possible by the method becomes particularly valuable when investigating phenomena occurring at comparatively short length scales, such as the Brownian motion of a microparticle.
Here, we report on progress in applying the new method to measurements on microparticles suspended in liquid and trapped by an optical tweezer.
[1] S. Berg-Johansen, F. Töppel et al., Optica 2(10), 864 (2015).
[2] R. J. C. Spreeuw, Phys. Rev. A 63, 062302 (2001).