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  4. Characterizing and exploiting cross-talk effect in SPAD arrays for two-photon interference
 
conference paper

Characterizing and exploiting cross-talk effect in SPAD arrays for two-photon interference

Kulkov, Sergei
•
Radmacherova, Lada
•
Matousek, Ondrej
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Prochazka, Ivan
•
Sobolewski, Roman
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June 6, 2025
Quantum Optics and Photon Counting 2025
Quantum Optics and Photon Counting

SPAD arrays are becoming a popular choice for measuring two-photon interference effects thanks to their high timing precision, fast readout, and high quantum efficiency. However, such sensors are affected by cross-talk that may mimic the useful signal. Even with a low probability of seeing cross-talk effect between neighboring SPADs, it was found that it still may reach the farther channels up to a half of millimeter away. Moreover, the use of microlenses that help SPADs achieve even better efficiency further boosts the cross-talk effect. In this work, we characterize the cross-talk effect and compare it to the Hanbury Brown-Twiss effect in the LinoSPAD2 camera, which has a linear sensor of 512 SPADs. Additionally, we compare the results between sensors with and without the microlenses. Finally, we present a timing calibration technique for the detector that utilizes the cross-talk effect.

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Type
conference paper
DOI
10.1117/12.3058261
Scopus ID

2-s2.0-105010682810

Author(s)
Kulkov, Sergei

Czech Technical University in Prague

Radmacherova, Lada

Czech Technical University in Prague

Matousek, Ondrej

Czech Technical University in Prague

De Sousa, Lou Ann Pestana

Czech Technical University in Prague

Bernasconi, Ermanno  

École Polytechnique Fédérale de Lausanne

Bruschini, Claudio  

École Polytechnique Fédérale de Lausanne

Milanese, Tommaso  

École Polytechnique Fédérale de Lausanne

Charbon, Edoardo  

École Polytechnique Fédérale de Lausanne

Nomerotski, Andrei

Czech Technical University in Prague

Svihra, Peter

Czech Technical University in Prague

Editors
Prochazka, Ivan
•
Sobolewski, Roman
•
Vojtech, Josef
Date Issued

2025-06-06

Publisher

SPIE

Published in
Quantum Optics and Photon Counting 2025
ISBN of the book

9781510688469

Book part number

13525

Series title/Series vol.

Proceedings of SPIE; 13525

Subjects

calibration

•

cross-talk

•

HBT effect

•

SPAD camera

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
AQUA  
Event nameEvent acronymEvent placeEvent date
Quantum Optics and Photon Counting

Prague, Czechia

2025-04-07 - 2025-04-10

FunderFunding(s)Grant NumberGrant URL

EPFL

GACR

25-15534M

Available on Infoscience
July 25, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/252641
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