Broadband chirality-coded meta-aperture for photon-spin resolving

Du, L, Kou, S, Balaur, E, Cadusch, J, Roberts, A, Abbey, B, Yuan, X, Tang, D and Lin, J 2015, 'Broadband chirality-coded meta-aperture for photon-spin resolving', Nature Communications, vol. 6, 10051, pp. 1-7.

Document type: Journal Article
Collection: Journal Articles

Title Broadband chirality-coded meta-aperture for photon-spin resolving
Author(s) Du, L
Kou, S
Balaur, E
Cadusch, J
Roberts, A
Abbey, B
Yuan, X
Tang, D
Lin, J
Year 2015
Journal name Nature Communications
Volume number 6
Article Number 10051
Start page 1
End page 7
Total pages 7
Publisher Nature Publishing Group
Abstract The behaviour of light transmitted through an individual subwavelength aperture becomes counterintuitive in the presence of surrounding 'decoration', a phenomenon known as the extraordinary optical transmission. Despite being polarization-sensitive, such an individual nano-aperture, however, often cannot differentiate between the two distinct spin-states of photons because of the loss of photon information on light-aperture interaction. This creates a 'blind-spot' for the aperture with respect to the helicity of chiral light. Here we report the development of a subwavelength aperture embedded with metasurfaces dubbed a 'meta-aperture', which breaks this spin degeneracy. By exploiting the phase-shaping capabilities of metasurfaces, we are able to create specific meta-apertures in which the pair of circularly polarized light spin-states produces opposite transmission spectra over a broad spectral range. The concept incorporating metasurfaces with nano-apertures provides a venue for exploring new physics on spin-aperture interaction and potentially has a broad range of applications in spin-optoelectronics and chiral sensing.
Subject Nanophotonics
DOI - identifier 10.1038/ncomms10051
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ISSN 2041-1723
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
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