The University of Southampton
University of Southampton Institutional Repository

Strong coupling of ionizing transitions

Strong coupling of ionizing transitions
Strong coupling of ionizing transitions
In cavity quantum electrodynamics, strong light–matter coupling is normally observed between a photon mode and a discrete optically active transition. In the present work we demonstrate that strong coupling can also be achieved using ionizing, intrinsically continuum, transitions. This leads to the appearance of novel discrete polaritonic resonances, corresponding to dressed bound exciton states, kept together by the exchange of virtual cavity photons. We apply our
theory to the case of intersubband transitions in doped quantum wells, where Coulomb-bound excitons are absent. In considering quantum wells with a single bound electronic subband, in which all transitions involve states in the continuum, we find that the novel bound excitons predicted by our theory are observable within present-day, realistic parameters. Our work shows how strong light–matter coupling can be used as a novel gauge to tune both optical and electronic properties of semiconductor heterostructures beyond those permitted by mere crystal properties.
2334-2536
354-361
Cortese, Erika
1dd08835-71b4-4d4e-89ef-664f189718a2
Carusotto, Iacopo
5def2216-882e-44f1-9a32-74decec54b2b
Colombelli, Raffaele
cf9c88c0-6717-49ba-8f3e-57d1415b3b70
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Cortese, Erika
1dd08835-71b4-4d4e-89ef-664f189718a2
Carusotto, Iacopo
5def2216-882e-44f1-9a32-74decec54b2b
Colombelli, Raffaele
cf9c88c0-6717-49ba-8f3e-57d1415b3b70
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473

Cortese, Erika, Carusotto, Iacopo, Colombelli, Raffaele and De Liberato, Simone (2019) Strong coupling of ionizing transitions. Optica, 6 (3), 354-361. (doi:10.1364/OPTICA.6.000354).

Record type: Article

Abstract

In cavity quantum electrodynamics, strong light–matter coupling is normally observed between a photon mode and a discrete optically active transition. In the present work we demonstrate that strong coupling can also be achieved using ionizing, intrinsically continuum, transitions. This leads to the appearance of novel discrete polaritonic resonances, corresponding to dressed bound exciton states, kept together by the exchange of virtual cavity photons. We apply our
theory to the case of intersubband transitions in doped quantum wells, where Coulomb-bound excitons are absent. In considering quantum wells with a single bound electronic subband, in which all transitions involve states in the continuum, we find that the novel bound excitons predicted by our theory are observable within present-day, realistic parameters. Our work shows how strong light–matter coupling can be used as a novel gauge to tune both optical and electronic properties of semiconductor heterostructures beyond those permitted by mere crystal properties.

Text
Optica - Proof
Available under License Creative Commons Attribution.
Download (1MB)

More information

Accepted/In Press date: 24 January 2019
e-pub ahead of print date: 11 March 2019

Identifiers

Local EPrints ID: 428797
URI: https://eprints.soton.ac.uk/id/eprint/428797
ISSN: 2334-2536
PURE UUID: 8b74504f-8610-45f0-a8bb-c9388d80dd85
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

Catalogue record

Date deposited: 08 Mar 2019 17:30
Last modified: 24 May 2019 00:31

Export record

Altmetrics

Contributors

Author: Erika Cortese
Author: Iacopo Carusotto
Author: Raffaele Colombelli

University divisions

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.

×