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, October 13, 2025 (3:00 PM) to Friday, October 17, 2025 (2:05 PM)

Monday, October 13, 2025

4:30 PM Registration

4:30 PM - 6:00 PM

6:00 PM BBQ Get-Together

6:00 PM - 8:00 PM
Tuesday, October 14, 2025
9:00 AM History of Stellar Intensity Interferometry
9:00 AM - 10:30 AM
Contributions

9:10 AM Intensity correlations: imaging and quantum optics in astrophysics - Robin Kaiser (CNRS) Robin Kaiser (CNRS / Université de la Côte d’Azur)

9:50 AM Recent Advancements in Modern Stellar Intensity Interferometry - DAVID KIEDA (Department of Physics and Astronomy, University of Utah)
10:30 AM Coffee Break
Coffee Break
10:30 AM - 11:00 AM
11:00 AM Science goals
11:00 AM - 12:30 PM
Contributions

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

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

11:50 AM SII science cases: an xkcd-inspired view - Prasenjit Saha (University of Zurich)
12:30 PM Lunch Break
Lunch Break
12:30 PM - 2:00 PM
2:00 PM Science goals
2:00 PM - 3:30 PM
Contributions

2:00 PM Future Astrophysical Targets for Intensity Interferometry - Norman Murray (CITA, University of Toronto)

2:35 PM Probing H0 and resolving AGN disks with ultrafast photon counters - Marios Galanis (Stanford University)

2:50 PM Charting the High-Resolution Frontier: Science with Stellar Intensity Interferometry - Sagi Ben Ami (Weizmann Institute of Science)

3:25 PM Discussion starter: ESO white paper for SII - Alison Mitchell
3:30 PM Coffee Break
Coffee Break
3:30 PM - 4:00 PM
4:00 PM SII with IACTs
4:00 PM - 6:00 PM
Contributions

4:00 PM State-of-the-art space-based quantum communication - Christoph Marquardt (Max Planck Institute for the Science of Light)

4:35 PM Analysis techniques for pushing the limits of stellar intensity interferometry - John Scott (The Ohio State University)

4:50 PM Modeling preliminary VERITAS-SII measurements on Spica - Michael Lisa (Ohio State University)

5:25 PM Enabling Intensity Interferometry with the CTAO - Jonathan Biteau (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
Wednesday, October 15, 2025
9:00 AM SII with IACTs
9:00 AM - 10:30 AM
Contributions

9:00 AM Optical intensity interferometry observations with the MAGIC and CTAO-North LST telescopes - Tarek Hassan Collado (CIEMAT)

9:35 AM The Butterfly camera: expanding sensitivity and angular coverage of IACTs as stellar intensity interferometers - Fernando Frías (Instituto de Astrofísica de Canarias (IAC))

9:50 AM Sub-nanosecond, very narrow band intensity interferometry on the ASTRI Mini-Array - Luca Zampieri (INAF-Astronomical Observatory of Padova)
10:30 AM Coffee Break
Coffee Break
10:30 AM - 11:00 AM
11:00 AM Detectors for SII: QUASAR
11:00 AM - 1:00 PM
Contributions

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

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

12:10 PM 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 PM GPU based timestamps correlation with parallax correction - Etienne Lyard (University of Geneva)

12:40 PM Recent SPAD developments - Gilles Koziol (University of Geneva)
1:00 PM Lunch Break
Lunch Break
1:00 PM - 2:30 PM
2:30 PM Social Event: Excursion to Castle Rabenstein & Conference Dinner
Excursion to Castle Rabenstein & Conference Dinner
2:30 PM - 6:45 PM
Contributions

6:30 PM Perspectives and Opportunities for Intensity Interferometry - A Personal View - Colin Carlile (Division of Astrophysics, Lund University)
Thursday, October 16, 2025
9:00 AM Detectors for SII
9:00 AM - 10:30 AM
Contributions

9:00 AM Superconducting nanowire detector review and prospects for SII - Boris Korzh (University of Geneva)

9:35 AM Quantum-assisted Interferometers for astrometry - Andrei Nomerotski (Czech Technical University in Prague)

10:10 AM Broadband HBT in spectrometer - Sergei Kulkov
10:30 AM Coffee Break
Coffee Break
10:30 AM - 11:00 AM
11:00 AM Detectors for SII and SII with optical telescopes
11:00 AM - 1:00 PM
Contributions

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

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

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

12:05 PM 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)
1:00 PM Lunch Break
Lunch Break
1:00 PM - 2:30 PM
2:30 PM Arrays of small telescopes and Advanced Methods
2:30 PM - 4:30 PM
Contributions

2:30 PM 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)

3:10 PM Big Performance from Small Telescopes: Multiplexed SII with the MAST Array - Oren Ironi (Weizmann Institute of Science)

3:50 PM Third-order correlation measurements with H.E.S.S. - an experimental study towards closure phases in intensity interferometry - Andreas Zmija (ECAP)
4:30 PM Coffee Break
Coffee Break
4:30 PM - 5:00 PM
5:00 PM Poster Session / Discussion
5:00 PM - 7:00 PM
Contributions

5:00 PM Intensity Interferometry with a 4-Pixel SNSPD System - Francesco Colangelo

5:00 PM Spatial photon correlations using nearly dead time free ultra-high throughput single photon detection - Iurii Datii

5:30 PM Preliminary study of a multiplexing design for an intensity interferometry instrument at optical wavelength - Ilian Ellafi

5:30 PM Custom Shack-Hartmann Sensor for Stellar Intensity Interferometry - Aleena Nedunilath Thomas

6:00 PM The Large Fiber Array Spectroscopy Telescope as a Platform for Intensity Interferometry - Chad Bender

6:00 PM An experiment of intensity interferometry utilizing Fizeau interferometric telescope - Xinyang Chen

6:30 PM Improved Signal to Noise Ratio Observing Sirius Using Lower Jitter Time Tagging, Fiber Optics, and Delay cables - Tom Mozdzen

6:30 PM Intensity interferometer with multi channel SNSPD - Congcong Zhang
Friday, October 17, 2025
9:00 AM Advanced methods
9:00 AM - 10:15 AM
Contributions

9:00 AM Quantum telescopes and quantum imaging - Pieter Kok (University of Sheffield)

9:40 AM Intensity Interferometry for Cosmology and Fundamental Physics - Ken Van Tilburg (NYU)
10:15 AM Coffee Break
Coffee Break
10:15 AM - 10:45 AM
10:45 AM Advanced methods: Contributed Talks
Contributed Talks
10:45 AM - 11:30 AM
Contributions

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

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

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

11:30 AM - 12:00 PM

12:00 PM Farewell Lunch
Farewell Lunch
12:00 PM - 1:15 PM

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