Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost

Maxime Gaignard; K. E. Połczyńska; Niels Gregersen; D.  Wigger; J. P. Poizat; Jean-Michel Gérard; Julien Claudon; J.  Kasprzak

Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost

Maxime Gaignard
, K. E. Połczyńska
, Niels Gregersen
, D. Wigger
, J. P. Poizat
, Jean-Michel Gérard
, Julien Claudon
, J. Kasprzak

Université Grenoble Alpes
University of Warsaw
University of Münster

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

19 Downloads (Orbit)

Abstract

We measured coherent ultrafast dynamics of exciton complexes in a single strongly-confined InAs quantum dot embedded in a GaAs nanopost. Such a photonic structure combines a wave guiding with a cavity effect and assures an enhanced light-matter coupling. Coherence properties of an exciton-biexciton system hosted by a quantum dot are assessed with four-wave mixing microscopy. Our results show that this broad-band photonic structure is an excellent asset to probe coherent couplings in a small set of solid state quantum systems and to investigate the coherence dynamics within the level structure of their excited states

Original language	English
Title of host publication	Proceedings of 37^th International Conference on the Physics of Semiconductors
Number of pages	12
Publication date	2026
Publication status	Published - 2026
Event	37^th International Conference on the Physics of Semiconductors - Keio Plaza Hotel, Shinjuku, Tokyo, Japan Duration: 16 Aug 2026 → 21 Aug 2026

Conference

Conference	37^th International Conference on the Physics of Semiconductors
Location	Keio Plaza Hotel
Country/Territory	Japan
City	Shinjuku, Tokyo
Period	16/08/2026 → 21/08/2026

Access to Document

FulltextAccepted author manuscript, 2.15 MB

OpenUrl availability

Check availability in DTU Findit

Cite this

@inproceedings{de5ed6117de24132b86f9fd2752497fd,

title = "Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost",

abstract = "We measured coherent ultrafast dynamics of exciton complexes in a single strongly-confined InAs quantum dot embedded in a GaAs nanopost. Such a photonic structure combines a wave guiding with a cavity effect and assures an enhanced light-matter coupling. Coherence properties of an exciton-biexciton system hosted by a quantum dot are assessed with four-wave mixing microscopy. Our results show that this broad-band photonic structure is an excellent asset to probe coherent couplings in a small set of solid state quantum systems and to investigate the coherence dynamics within the level structure of their excited states",

author = "Maxime Gaignard and Po{\l}czy{\'n}ska, \{K. E.\} and Niels Gregersen and D. Wigger and Poizat, \{J. P.\} and Jean-Michel G{\'e}rard and Julien Claudon and J. Kasprzak",

year = "2026",

language = "English",

booktitle = "Proceedings of 37th International Conference on the Physics of Semiconductors",

note = "37<sup>th</sup> International Conference on the Physics of Semiconductors, ICPS 2026 ; Conference date: 16-08-2026 Through 21-08-2026",

}

Gaignard, M, Połczyńska, KE, Gregersen, N, Wigger, D, Poizat, JP, Gérard, J-M, Claudon, J & Kasprzak, J 2026, Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost. in Proceedings of 37^th International Conference on the Physics of Semiconductors. 37^th International Conference on the Physics of Semiconductors, Shinjuku, Tokyo, Japan, 16/08/2026.

TY - GEN

T1 - Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost

AU - Gaignard, Maxime

AU - Połczyńska, K. E.

AU - Gregersen, Niels

AU - Wigger, D.

AU - Poizat, J. P.

AU - Gérard, Jean-Michel

AU - Claudon, Julien

AU - Kasprzak, J.

PY - 2026

Y1 - 2026

N2 - We measured coherent ultrafast dynamics of exciton complexes in a single strongly-confined InAs quantum dot embedded in a GaAs nanopost. Such a photonic structure combines a wave guiding with a cavity effect and assures an enhanced light-matter coupling. Coherence properties of an exciton-biexciton system hosted by a quantum dot are assessed with four-wave mixing microscopy. Our results show that this broad-band photonic structure is an excellent asset to probe coherent couplings in a small set of solid state quantum systems and to investigate the coherence dynamics within the level structure of their excited states

AB - We measured coherent ultrafast dynamics of exciton complexes in a single strongly-confined InAs quantum dot embedded in a GaAs nanopost. Such a photonic structure combines a wave guiding with a cavity effect and assures an enhanced light-matter coupling. Coherence properties of an exciton-biexciton system hosted by a quantum dot are assessed with four-wave mixing microscopy. Our results show that this broad-band photonic structure is an excellent asset to probe coherent couplings in a small set of solid state quantum systems and to investigate the coherence dynamics within the level structure of their excited states

M3 - Article in proceedings

BT - Proceedings of 37th International Conference on the Physics of Semiconductors

T2 - 37<sup>th</sup> International Conference on the Physics of Semiconductors

Y2 - 16 August 2026 through 21 August 2026

ER -

Coherent dynamics of individual excitons in a quantum dot embedded in a nanopost

Abstract

Conference

Access to Document

OpenUrl availability

Fingerprint

Cite this