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Design for a nanoscale single-photon spin splitter for modes with orbital angular momentum

Design for a nanoscale single-photon spin splitter for modes with orbital angular momentum
Design for a nanoscale single-photon spin splitter for modes with orbital angular momentum

We propose using the effective spin-orbit coupling of light in Bragg-modulated cylindrical waveguides for the efficient separation of spin-up and spin-down photons emitted by a single photon emitter. Because of the spin and directional dependence of photonic stop bands in the waveguides, spin-up (-down) photon propagation in the negative (positive) direction along the waveguide axis is blocked while the same photon freely propagates in the opposite direction. Frequency shifts of photonic band structures induced by the spin-orbit coupling are verified by finite-difference time-domain numerical simulations.

0031-9007
Li, G.
812e6532-3890-4b72-a53b-824008836a78
Sheremet, A. S.
fef59e37-fdfb-4fd3-bbd2-4242057b384d
Ge, R.
f62c06d4-21d3-4f41-af6a-1cdaa79c8976
Liew, T. C.H.
293a2372-69e9-4ca4-b616-c8694c9a3812
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Li, G.
812e6532-3890-4b72-a53b-824008836a78
Sheremet, A. S.
fef59e37-fdfb-4fd3-bbd2-4242057b384d
Ge, R.
f62c06d4-21d3-4f41-af6a-1cdaa79c8976
Liew, T. C.H.
293a2372-69e9-4ca4-b616-c8694c9a3812
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b

Li, G., Sheremet, A. S., Ge, R., Liew, T. C.H. and Kavokin, A. V. (2018) Design for a nanoscale single-photon spin splitter for modes with orbital angular momentum. Physical Review Letters, 121 (5). (doi:10.1103/PhysRevLett.121.053901).

Record type: Article

Abstract

We propose using the effective spin-orbit coupling of light in Bragg-modulated cylindrical waveguides for the efficient separation of spin-up and spin-down photons emitted by a single photon emitter. Because of the spin and directional dependence of photonic stop bands in the waveguides, spin-up (-down) photon propagation in the negative (positive) direction along the waveguide axis is blocked while the same photon freely propagates in the opposite direction. Frequency shifts of photonic band structures induced by the spin-orbit coupling are verified by finite-difference time-domain numerical simulations.

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e-pub ahead of print date: 2 August 2018

Identifiers

Local EPrints ID: 425784
URI: https://eprints.soton.ac.uk/id/eprint/425784
ISSN: 0031-9007
PURE UUID: ab65b27a-7850-47aa-b3c6-59eef34a0c40

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Date deposited: 02 Nov 2018 17:30
Last modified: 02 Nov 2018 17:30

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