The University of Southampton
University of Southampton Institutional Repository

Letter abstract. Exciton-polariton spin switches

Letter abstract. Exciton-polariton spin switches
Letter abstract. Exciton-polariton spin switches
Integrated switching devices comprise the building blocks of ultrafast optical signal processing. As the next stage following intensity switching circular polarization switches are attracting considerable interest because of their applications in spin-based architectures. They usually take advantage of nonlinear optical effects, and require high powers and external optical elements. Semiconductor microcavities provide a significant step forward due to their low-threshold, polarization-dependent, nonlinear emission, fast operation and integrability. Here, we demonstrate a non-local, all-optical spin switch based on exciton–polaritons in a semiconductor microcavity. In the presence of a sub-threshold pump laser (dark regime), a tightly localized probe induces the switch-on of the entire pumped area. If the pump is circularly polarized, the switch is conditional on the polarization of the probe, but if it is linearly polarized, a circularly polarized probe fully determines the final polarization of the pumped area. These results set the basis for the development of spin-based logic devices, integrated in a chip.
1749-4885
361-366
Amo, A.
22b8d208-38ad-45b5-9f39-3f5faf501110
Liew, T.C.H.
9c0a81ce-432d-46cf-ac38-749cf0e5b1d2
Adrados, C.
73b90f72-bc6c-45d7-ba42-957bf4c815c7
Houdre, R.
956cbb08-57c4-44b9-b467-6f0e0f21ebac
Giacobino, E.
183c56bf-40e2-4168-8492-a63fb85a32ef
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Bramati, A.
5cab0c68-2e34-45ce-be83-16edc2b9e430
Amo, A.
22b8d208-38ad-45b5-9f39-3f5faf501110
Liew, T.C.H.
9c0a81ce-432d-46cf-ac38-749cf0e5b1d2
Adrados, C.
73b90f72-bc6c-45d7-ba42-957bf4c815c7
Houdre, R.
956cbb08-57c4-44b9-b467-6f0e0f21ebac
Giacobino, E.
183c56bf-40e2-4168-8492-a63fb85a32ef
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Bramati, A.
5cab0c68-2e34-45ce-be83-16edc2b9e430

Amo, A., Liew, T.C.H., Adrados, C., Houdre, R., Giacobino, E., Kavokin, A.V. and Bramati, A. (2010) Letter abstract. Exciton-polariton spin switches. Nature Photonics, 4, 361-366. (doi:10.1038/nphoton.2010.79).

Record type: Article

Abstract

Integrated switching devices comprise the building blocks of ultrafast optical signal processing. As the next stage following intensity switching circular polarization switches are attracting considerable interest because of their applications in spin-based architectures. They usually take advantage of nonlinear optical effects, and require high powers and external optical elements. Semiconductor microcavities provide a significant step forward due to their low-threshold, polarization-dependent, nonlinear emission, fast operation and integrability. Here, we demonstrate a non-local, all-optical spin switch based on exciton–polaritons in a semiconductor microcavity. In the presence of a sub-threshold pump laser (dark regime), a tightly localized probe induces the switch-on of the entire pumped area. If the pump is circularly polarized, the switch is conditional on the polarization of the probe, but if it is linearly polarized, a circularly polarized probe fully determines the final polarization of the pumped area. These results set the basis for the development of spin-based logic devices, integrated in a chip.

Text
NPHOTON.2010.79.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Published date: June 2010

Identifiers

Local EPrints ID: 148753
URI: https://eprints.soton.ac.uk/id/eprint/148753
ISSN: 1749-4885
PURE UUID: 3e4fba54-6fa4-4ee9-bfc9-42b5d5f5b462

Catalogue record

Date deposited: 28 Apr 2010 14:48
Last modified: 18 Jul 2019 16:33

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×