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  4. Single SiGe quantum dot emission deterministically enhanced in a high-Q photonic crystal resonator
 
research article

Single SiGe quantum dot emission deterministically enhanced in a high-Q photonic crystal resonator

Poempool, Thanavorn
•
Aberl, Johannes
•
Clementi, Marco  
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April 24, 2023
Optics Express

We report the resonantly enhanced radiative emission from a single SiGe quantum dot (QD), which is deterministically embedded into a bichromatic photonic crystal resonator (PhCR) at the position of its largest modal electric field by a scalable method. By optimizing our molecular beam epitaxy (MBE) growth technique, we were able to reduce the amount of Ge within the whole resonator to obtain an absolute minimum of exactly one QD, accurately positioned by lithographic methods relative to the PhCR, and an otherwise flat, a few monolayer thin, Ge wetting layer (WL). With this method, record quality (Q) factors for QD-loaded PhCRs up to Q similar to 105 are achieved. A comparison with control PhCRs on samples containing a WL but no QDs is presented, as well as a detailed analysis of the dependence of the resonator-coupled emission on temperature, excitation intensity, and emission decay after pulsed excitation. Our findings undoubtedly confirm a single QD in the center of the resonator as a potentially novel photon source in the telecom spectral range.Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Type
research article
DOI
10.1364/OE.480281
Web of Science ID

WOS:000996264600006

Author(s)
Poempool, Thanavorn
Aberl, Johannes
Clementi, Marco  
Spindlberger, Lukas
Vukusic, Lada
Galli, Matteo
Gerace, Dario
Fournel, Frank
Hartmann, Jean-Michel
Schaeffler, Friedrich
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Date Issued

2023-04-24

Publisher

Optica Publishing Group

Published in
Optics Express
Volume

31

Issue

10

Start page

15564

End page

15578

Subjects

Optics

•

Optics

•

silicon photonics

•

light emitters

•

photoluminescence

•

nanocavity

•

technology

•

laser

•

boxes

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
PHOSL  
Available on Infoscience
July 3, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/198744
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