The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Spontaneous formation and optical manipulation of extended polariton condensates

Spontaneous formation and optical manipulation of extended polariton condensates
Spontaneous formation and optical manipulation of extended polariton condensates
Cavity exciton-polaritons1, (polaritons) are bosonic quasi-particles offering a unique solid-state system for investigating interacting condensates. Up to now, disorder-induced localization and short lifetimes have prevented the establishment of long-range off-diagonal order needed for any quantum manipulation of the condensate wavefunction. In this work, using a wire microcavity with polariton lifetimes much longer than in previous samples, we show that polariton condensates can propagate over macroscopic distances outside the excitation area, while preserving their spontaneous spatial coherence. An extended condensate wavefunction builds up with a degree of spatial coherence larger than 50% over distances 50 times the polariton de Broglie wavelength. The expansion of the condensate is shown to be governed by the repulsive potential induced by photogenerated excitons within the excitation area. The control of this local potential offers a new and versatile method to manipulate extended polariton condensates. As an illustration, we demonstrate synchronization of extended condensates by controlled tunnel coupling and localization of condensates in a trap with optically controlled dimensions
1745-2473
860-864
Wertz, E.
aa89aa99-06eb-4234-9318-d8a0cc1f38c1
Ferrier, L.
4aae5138-eb37-4082-8c8c-bc1220bab4d4
Solnyshkov, D.D.
cc34c049-05c4-413c-bbf1-33bde8236427
Johne, R.
a00d7638-f686-4364-9e38-c64c271fdf6f
Sanvitto, D.
78c820d7-04fe-4970-a87c-bd5ec607f7b9
Lemaitre, A.
c6e09630-9aaf-4b1d-a832-ecdecd693de4
Sagnes, I.
2c96ab5e-82b6-4f52-9f1a-1c71f4bd798e
Grousson, R.
23684cdd-9f73-48d7-8937-bd15ddd3f732
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Senellart, P.
83b98ae4-9f06-4532-ae7f-59bc790a4612
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Bloch, J.
be34f326-179d-4383-a7b5-eee0578fc16c
Wertz, E.
aa89aa99-06eb-4234-9318-d8a0cc1f38c1
Ferrier, L.
4aae5138-eb37-4082-8c8c-bc1220bab4d4
Solnyshkov, D.D.
cc34c049-05c4-413c-bbf1-33bde8236427
Johne, R.
a00d7638-f686-4364-9e38-c64c271fdf6f
Sanvitto, D.
78c820d7-04fe-4970-a87c-bd5ec607f7b9
Lemaitre, A.
c6e09630-9aaf-4b1d-a832-ecdecd693de4
Sagnes, I.
2c96ab5e-82b6-4f52-9f1a-1c71f4bd798e
Grousson, R.
23684cdd-9f73-48d7-8937-bd15ddd3f732
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Senellart, P.
83b98ae4-9f06-4532-ae7f-59bc790a4612
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Bloch, J.
be34f326-179d-4383-a7b5-eee0578fc16c

Wertz, E., Ferrier, L., Solnyshkov, D.D., Johne, R., Sanvitto, D., Lemaitre, A., Sagnes, I., Grousson, R., Kavokin, A.V., Senellart, P., Malpuech, G. and Bloch, J. (2010) Spontaneous formation and optical manipulation of extended polariton condensates. Nature Physics, 6, 860-864. (doi:10.1038/nphys1750).

Record type: Article

Abstract

Cavity exciton-polaritons1, (polaritons) are bosonic quasi-particles offering a unique solid-state system for investigating interacting condensates. Up to now, disorder-induced localization and short lifetimes have prevented the establishment of long-range off-diagonal order needed for any quantum manipulation of the condensate wavefunction. In this work, using a wire microcavity with polariton lifetimes much longer than in previous samples, we show that polariton condensates can propagate over macroscopic distances outside the excitation area, while preserving their spontaneous spatial coherence. An extended condensate wavefunction builds up with a degree of spatial coherence larger than 50% over distances 50 times the polariton de Broglie wavelength. The expansion of the condensate is shown to be governed by the repulsive potential induced by photogenerated excitons within the excitation area. The control of this local potential offers a new and versatile method to manipulate extended polariton condensates. As an illustration, we demonstrate synchronization of extended condensates by controlled tunnel coupling and localization of condensates in a trap with optically controlled dimensions

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

More information

Published date: 29 November 2010
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 180555
URI: http://eprints.soton.ac.uk/id/eprint/180555
ISSN: 1745-2473
PURE UUID: 329da343-b70f-4b0a-b50b-b9569e29fb05

Catalogue record

Date deposited: 11 Apr 2011 08:10
Last modified: 25 Nov 2021 19:53

Export record

Altmetrics

Contributors

Author: E. Wertz
Author: L. Ferrier
Author: D.D. Solnyshkov
Author: R. Johne
Author: D. Sanvitto
Author: A. Lemaitre
Author: I. Sagnes
Author: R. Grousson
Author: A.V. Kavokin
Author: P. Senellart
Author: G. Malpuech
Author: J. Bloch

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 http://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.

×