Weak Measurement Enhanced Spin Hall Effect of Light for Particle Displacement Sensing

Neugebauer M, Nechayev S, Vorndran M, Leuchs G, Banzer P (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Nano Letters American Chemical Society

Book Volume: 19

Pages Range: 422-425

Journal Issue: 1

DOI: 10.1021/acs.nanolett.8b04219

Abstract

A spherical nanoparticle can scatter tightly focused optical beams in a spin-segmented manner, meaning that the far field of the scattered light exhibits laterally separated left- and right-handed circularly polarized components. This effect, commonly referred to as giant spin Hall effect of light, strongly depends on the position of the scatterer in the focal volume. Here, a scheme that utilizes an optical weak measurement in a cylindrical polarization basis is put forward to drastically enhance the spin-segmentation and, therefore, the sensitivity to small displacements of a scatterer. In particular, we experimentally achieve a change of the spin-splitting signal of 5% per nanometer displacement.

Authors with CRIS profile

Martin Neugebauer Lehrstuhl für Experimentalphysik Martin Vorndran Lehrstuhl für Photonische Technologien (LPT) Gerhard Leuchs Lehrstuhl für Experimentalphysik Peter Banzer Professur für Experimentalphysik

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Neugebauer, M., Nechayev, S., Vorndran, M., Leuchs, G., & Banzer, P. (2019). Weak Measurement Enhanced Spin Hall Effect of Light for Particle Displacement Sensing. Nano Letters, 19(1), 422-425. https://doi.org/10.1021/acs.nanolett.8b04219

MLA:

Neugebauer, Martin, et al. "Weak Measurement Enhanced Spin Hall Effect of Light for Particle Displacement Sensing." Nano Letters 19.1 (2019): 422-425.

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