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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00384447" target="_blank" >RIV/68407700:21340/25:00384447 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/25:00384447

Výsledek na webu

<a href="https://doi.org/10.1117/12.3058261" target="_blank" >https://doi.org/10.1117/12.3058261</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3058261" target="_blank" >10.1117/12.3058261</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GM25-15534M" target="_blank" >GM25-15534M: Kvantová Astrometrie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. SPIE 13525, Quantum Optics and Photon Counting 2025

ISBN

978-1-5106-8846-9

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

14

Strana od-do

1-14

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

Praha

Datum konání akce

7. 4. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001533517800001