Characterizing and exploiting cross-talk effect in SPAD arrays for two-photon interference
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.
2-s2.0-105010682810
Czech Technical University in Prague
Czech Technical University in Prague
Czech Technical University in Prague
Czech Technical University in Prague
École Polytechnique Fédérale de Lausanne
École Polytechnique Fédérale de Lausanne
École Polytechnique Fédérale de Lausanne
École Polytechnique Fédérale de Lausanne
Czech Technical University in Prague
Czech Technical University in Prague
2025-06-06
9781510688469
13525
Proceedings of SPIE; 13525
REVIEWED
EPFL
| Event name | Event acronym | Event place | Event date |
Prague, Czechia | 2025-04-07 - 2025-04-10 | ||