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PreprintCC BY 4.0arXiv

On-Sky Single-photon Time resolution of 35 ps with White Rabbit synchronization: towards the measurement of the size of a White Dwarf star

  • F. Izraelevitch-Patitucci
  • S. Tolila
  • I. Ellafi
  • J. -P. Rivet
  • M. Hugbart
  • G. Labeyrie
  • O. Lai
  • A. Zmija
  • W. Guerin
  • R. Kaiser
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Abstract

The IC4Stars (Intensity Correlation for Stars) project aims to measure the diameter of the white dwarf star Sirius B, using Intensity Interferometry. In this work we present our latest efforts and the milestones achieved in the last year. We report laboratory characterization of the single-photon detectors, TDC and synchronization electronics. We describe an observation campaign where we demonstrated on-sky time resolution below 35 ps RMS, synchronizing two TDCs using the White Rabbit protocol and a 30 m telecom fiber. We developed the data acquisition of the raw time tags, and an algorithm to compute the second-order correlation function.

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Cite

BibTeXRIS
BibTeX
@misc{izraelevitchpatitucci2026onsky,
  title = {{On-Sky Single-photon Time resolution of 35 ps with White Rabbit synchronization: towards the measurement of the size of a White Dwarf star}},
  author = {F. Izraelevitch-Patitucci and S. Tolila and I. Ellafi and J. -P. Rivet and M. Hugbart and G. Labeyrie and O. Lai and A. Zmija and W. Guerin and R. Kaiser},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2606.25817},
  eprint = {2606.25817},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.25817},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - On-Sky Single-photon Time resolution of 35 ps with White Rabbit synchronization: towards the measurement of the size of a White Dwarf star
AU  - F. Izraelevitch-Patitucci
AU  - S. Tolila
AU  - I. Ellafi
AU  - J. -P. Rivet
AU  - M. Hugbart
AU  - G. Labeyrie
AU  - O. Lai
AU  - A. Zmija
AU  - W. Guerin
AU  - R. Kaiser
PY  - 2026
DA  - 2026/09/01
PB  - arXiv
DO  - 10.48550/arxiv.2606.25817
UR  - https://arxiv.org/abs/2606.25817
AB  - The IC4Stars (Intensity Correlation for Stars) project aims to measure the diameter of the white dwarf star Sirius B, using Intensity Interferometry. In this work we present our latest efforts and the milestones achieved in the last year. We report laboratory characterization of the single-photon detectors, TDC and synchronization electronics. We describe an observation campaign where we demonstrated on-sky time resolution below 35 ps RMS, synchronizing two TDCs using the White Rabbit protocol and a 30 m telecom fiber. We developed the data acquisition of the raw time tags, and an algorithm to compute the second-order correlation function.
ER  -