Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots

Tim Schneider; Niklas Bruckmoser; Nadeem Akhlaq; Kevin Kiener; Namita Agrawal; Lasse Södergren; Benjamin Lienhard; Jonathan Finley; Stefan Filipp

Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots

Tim Schneider
, Niklas Bruckmoser
, Nadeem Akhlaq
, Kevin Kiener
, Namita Agrawal
, Lasse Södergren
, Benjamin Lienhard
, Jonathan Finley
, Stefan Filipp

Walther-Meissner-Institut
Walter Schottky Institut
Technical University of Munich
Munich Center for Quantum Science and Technology (MCQST)

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

Abstract

We present a monolithic AlGaAs/GaAs spot-size converter for InAs quantum dots integrating a PIN-diode stack. Simulations show > 99 % mode-conversion efficiency at 935 nm, enabling robust, low-loss direct fiber packaging for cryogenic quantum devices.

Original language	English
Title of host publication	Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition
Publisher	Optical Society of America
ISBN (Electronic)	9781957171616
State	Published - 2026
Event	2026 Optica Quantum 2.0 Conference and Exhibition, QUANTUM 2026 - Glasgow, United Kingdom Duration: 15 Jun 2026 → 18 Jun 2026

Publication series

Name	Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition

Conference

Conference	2026 Optica Quantum 2.0 Conference and Exhibition, QUANTUM 2026
Country/Territory	United Kingdom
City	Glasgow
Period	15/06/26 → 18/06/26

Cite this

@inproceedings{eb5d91652d06429ab825c48837cefcbe,

title = "Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots",

abstract = "We present a monolithic AlGaAs/GaAs spot-size converter for InAs quantum dots integrating a PIN-diode stack. Simulations show > 99 \% mode-conversion efficiency at 935 nm, enabling robust, low-loss direct fiber packaging for cryogenic quantum devices.",

author = "Tim Schneider and Niklas Bruckmoser and Nadeem Akhlaq and Kevin Kiener and Namita Agrawal and Lasse S{\"o}dergren and Benjamin Lienhard and Jonathan Finley and Stefan Filipp",

note = "Publisher Copyright: {\textcopyright} Optica 2026 {\textcopyright} 2026 The Author(s); 2026 Optica Quantum 2.0 Conference and Exhibition, QUANTUM 2026 ; Conference date: 15-06-2026 Through 18-06-2026",

year = "2026",

language = "English",

series = "Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition",

publisher = "Optical Society of America",

booktitle = "Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition",

}

Schneider, T, Bruckmoser, N, Akhlaq, N, Kiener, K, Agrawal, N, Södergren, L, Lienhard, B , Finley, J & Filipp, S 2026, Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots. in Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition. Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition, Optical Society of America, 2026 Optica Quantum 2.0 Conference and Exhibition, QUANTUM 2026, Glasgow, United Kingdom, 15/06/26.

Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots. / Schneider, Tim; Bruckmoser, Niklas; Akhlaq, Nadeem et al.
Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition. Optical Society of America, 2026. (Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition).

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

TY - GEN

T1 - Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots

AU - Schneider, Tim

AU - Bruckmoser, Niklas

AU - Akhlaq, Nadeem

AU - Kiener, Kevin

AU - Agrawal, Namita

AU - Södergren, Lasse

AU - Lienhard, Benjamin

AU - Finley, Jonathan

AU - Filipp, Stefan

PY - 2026

Y1 - 2026

N2 - We present a monolithic AlGaAs/GaAs spot-size converter for InAs quantum dots integrating a PIN-diode stack. Simulations show > 99 % mode-conversion efficiency at 935 nm, enabling robust, low-loss direct fiber packaging for cryogenic quantum devices.

AB - We present a monolithic AlGaAs/GaAs spot-size converter for InAs quantum dots integrating a PIN-diode stack. Simulations show > 99 % mode-conversion efficiency at 935 nm, enabling robust, low-loss direct fiber packaging for cryogenic quantum devices.

UR - https://www.scopus.com/pages/publications/105051610868

M3 - Conference contribution

AN - SCOPUS:105051610868

T3 - Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition

BT - Quantum 2.0 - Proceedings Quantum 2.0 Conference and Exhibition

PB - Optical Society of America

T2 - 2026 Optica Quantum 2.0 Conference and Exhibition, QUANTUM 2026

Y2 - 15 June 2026 through 18 June 2026

ER -

Monolithic AlGaAs Spot-Size Converter for InAs/GaAs Quantum Dots

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