Name: Stellar Intensity Interferometry Workshop 2025
Start: 2025-10-13T15:00:00+02:00
End: 2025-10-17T14:05:00+02:00
Location: Research Campus Waischenfeld (Germany) of the Fraunhofer Society

Stellar Intensity Interferometry Workshop 2025

from Monday, 13 October 2025 (15:00) to Friday, 17 October 2025 (14:05)

Monday, 13 October 2025

16:30 Registration

16:30 - 18:00

18:00 BBQ Get-Together

18:00 - 20:00
Tuesday, 14 October 2025
09:00 History of Stellar Intensity Interferometry
09:00 - 10:30
Contributions

09:10 Intensity correlations: imaging and quantum optics in astrophysics - Robin Kaiser (CNRS) Robin Kaiser (CNRS / Université de la Côte d’Azur)

09:50 Recent Advancements in Modern Stellar Intensity Interferometry - DAVID KIEDA (Department of Physics and Astronomy, University of Utah)
10:30 Coffee Break
Coffee Break
10:30 - 11:00
11:00 Science goals
11:00 - 12:30
Contributions

11:00 Probing stellar atmospheres and binary stars with SII - Jason Aufdenberg (Embry-Riddle Aeronautical University)

11:35 When Stars Evolve Together: Detection of Tidal Signatures in Close Binaries - Km Nitu Rai (ARIES Nainital, India)

11:50 SII science cases: an xkcd-inspired view - Prasenjit Saha (University of Zurich)
12:30 Lunch Break
Lunch Break
12:30 - 14:00
14:00 Science goals
14:00 - 15:30
Contributions

14:00 Future Astrophysical Targets for Intensity Interferometry - Norman Murray (CITA, University of Toronto)

14:35 Probing H0 and resolving AGN disks with ultrafast photon counters - Marios Galanis (Stanford University)

14:50 Charting the High-Resolution Frontier: Science with Stellar Intensity Interferometry - Sagi Ben Ami (Weizmann Institute of Science)

15:25 Discussion starter: ESO white paper for SII - Alison Mitchell
15:30 Coffee Break
Coffee Break
15:30 - 16:00
16:00 SII with IACTs
16:00 - 18:00
Contributions

16:00 State-of-the-art space-based quantum communication - Christoph Marquardt (Max Planck Institute for the Science of Light)

16:35 Analysis techniques for pushing the limits of stellar intensity interferometry - John Scott (The Ohio State University)

16:50 Modeling preliminary VERITAS-SII measurements on Spica - Michael Lisa (Ohio State University)

17:25 Enabling Intensity Interferometry with the CTAO - Jonathan Biteau (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
Wednesday, 15 October 2025
09:00 SII with IACTs
09:00 - 10:30
Contributions

09:00 Optical intensity interferometry observations with the MAGIC and CTAO-North LST telescopes - Tarek Hassan Collado (CIEMAT)

09:35 The Butterfly camera: expanding sensitivity and angular coverage of IACTs as stellar intensity interferometers - Fernando Frías (Instituto de Astrofísica de Canarias (IAC))

09:50 Sub-nanosecond, very narrow band intensity interferometry on the ASTRI Mini-Array - Luca Zampieri (INAF-Astronomical Observatory of Padova)
10:30 Coffee Break
Coffee Break
10:30 - 11:00
11:00 Detectors for SII: QUASAR
11:00 - 13:00
Contributions

11:00 QUASAR project status: Nano to pico degree optical resolution to resolve accretion disks - Roland Walter

11:35 A 528𝗑16 CMOS SPAD array with sub-10 ps timing for high-resolution astrophysical observations - Ivan Cardea (EPFL)

12:10 QUASAR: Multi-telescope intensity interferometry observations: picosecond-scale effects of atmosphere and time synchronisation on observed signal - Vitalii Sliusar (University of Geneva, Department of Astronomy)

12:25 GPU based timestamps correlation with parallax correction - Etienne Lyard (University of Geneva)

12:40 Recent SPAD developments - Gilles Koziol (University of Geneva)
13:00 Lunch Break
Lunch Break
13:00 - 14:30
14:30 Social Event: Excursion to Castle Rabenstein & Conference Dinner
Excursion to Castle Rabenstein & Conference Dinner
14:30 - 18:45
Contributions

18:30 Perspectives and Opportunities for Intensity Interferometry - A Personal View - Colin Carlile (Division of Astrophysics, Lund University)
Thursday, 16 October 2025
09:00 Detectors for SII
09:00 - 10:30
Contributions

09:00 Superconducting nanowire detector review and prospects for SII - Boris Korzh (University of Geneva)

09:35 Quantum-assisted Interferometers for astrometry - Andrei Nomerotski (Czech Technical University in Prague)

10:10 Broadband HBT in spectrometer - Sergei Kulkov
10:30 Coffee Break
Coffee Break
10:30 - 11:00
11:00 Detectors for SII and SII with optical telescopes
11:00 - 13:00
Contributions

11:00 Advancements in Stellar Intensity Interferometry with PhotonPix Detectors - Verena Leopold

11:35 Developing a NIR Heterodyne Interferometer at MPP - Derek Strom (Max Planck Institute for Physics)

11:50 Large, high performance superconducting microwire detectors for astronomy - Iman Esmaeil Zadeh (TU Delft)

12:05 Intensity interferometry at Calern and beyond: towards wavelength multiplexing and the resolution of Sirius B - William Guerin (Université Côte d'Azur, CNRS, Institut de Physique de Nice)
13:00 Lunch Break
Lunch Break
13:00 - 14:30
14:30 Arrays of small telescopes and Advanced Methods
14:30 - 16:30
Contributions

14:30 The Mobile Intensity Interferometer for Stellar Observations---Intensity Interferometry with Fresnel Lens Telescopes - Christopher Ingenhütt (Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-Universität Erlangen-Nürnberg)

15:10 Big Performance from Small Telescopes: Multiplexed SII with the MAST Array - Oren Ironi (Weizmann Institute of Science)

15:50 Third-order correlation measurements with H.E.S.S. - an experimental study towards closure phases in intensity interferometry - Andreas Zmija (ECAP)
16:30 Coffee Break
Coffee Break
16:30 - 17:00
17:00 Poster Session / Discussion
17:00 - 19:00
Contributions

17:00 Intensity Interferometry with a 4-Pixel SNSPD System - Francesco Colangelo

17:00 Spatial photon correlations using nearly dead time free ultra-high throughput single photon detection - Iurii Datii

17:30 Preliminary study of a multiplexing design for an intensity interferometry instrument at optical wavelength - Ilian Ellafi

17:30 Custom Shack-Hartmann Sensor for Stellar Intensity Interferometry - Aleena Nedunilath Thomas

18:00 The Large Fiber Array Spectroscopy Telescope as a Platform for Intensity Interferometry - Chad Bender

18:00 An experiment of intensity interferometry utilizing Fizeau interferometric telescope - Xinyang Chen

18:30 Improved Signal to Noise Ratio Observing Sirius Using Lower Jitter Time Tagging, Fiber Optics, and Delay cables - Tom Mozdzen

18:30 Intensity interferometer with multi channel SNSPD - Congcong Zhang
Friday, 17 October 2025
09:00 Advanced methods
09:00 - 10:15
Contributions

09:00 Quantum telescopes and quantum imaging - Pieter Kok (University of Sheffield)

09:40 Intensity Interferometry for Cosmology and Fundamental Physics - Ken Van Tilburg (NYU)
10:15 Coffee Break
Coffee Break
10:15 - 10:45
10:45 Advanced methods: Contributed Talks
Contributed Talks
10:45 - 11:30
Contributions

10:45 Quantum Astrometry at Brookhaven National Laboratory - Aaron Mueninghoff (Stony Brook University)

11:00 Imaging with Intensity Interferometry - Albert Stebbins (Fermi National Accelerator Laboratory)

11:15 Inferring Line-of-Sight Velocity Distributions via Intensity Interferometry Correlation Functions - Lucijana Stanic
11:30 Summary

11:30 - 12:00

12:00 Farewell Lunch
Farewell Lunch
12:00 - 13:15