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

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.

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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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