hbt meeting logoProspects for astrophysics and quantum optics Workshop on Hanbury Brown & Twiss Interferometry : Prospects for astrophysics and quantum optics

May 12-13, 2014 Salle NEF, Observatoire de la Côte d’Azur

Contact : paul.nunez@oca.eu



A workshop that has brought together the astrophysics and quantum optics communities to discuss new scientific and instrumental developments of Intensity Interferometry.


Hanbury Brown & Twiss realized that when two neighboring detectors (telescopes) are pointed at a common star, their intensity signals display a mutual correlation which can be used to determine the stellar angular diameter. Intensity correlation measurements were subsequently used to measure the angular diameters of most of the brightest stars in the southern hemisphere. These experiments in turn triggered the development of quantum optics and have allowed studying photon statistics and non-classical states of light.

Several proposals have been recently put forth to revive astronomical Intensity Interferometry. In the meantime, cold atom experiments that perform intensity correlation studies have been developed. These techniques are expected to allow studying the nature of the emission of the recently discovered random laser with cold atoms and allow for new signatures to be explored in astrophysical lasers.

By stimulating collaboration between the astronomy and quantum optics communities, this conference will likely lead to scientific and instrumental developments in both fields.

Main topics

  • A revival of astronomical HBT Interferometry
  • HBT Interferometry in Atomic and Quantum Optics
  • Instrumental developments

Invited speakers

  • Dainis Dravins (Lund, Sweeden)
  • William Guerin (INLN, Nice)
  • Elliott Horch (U. Southern Connecticut, USA)
  • David Kieda (U. of Utah, USA)
  • Erez Ribak (Technion, Israel)
  • Dmitry Strekalov (JPL, USA)
  • Sebastien Tanzilli (LPMC, Nice)
  • Chris Westbrook (LCF, Paris)


  • Paul D. Nuñez (Collège de France and Laboratoire Lagrange)
  • Robin Kaiser (Institut Non-Lineaire de Nice)
  • Michel Lintz (Laboratoire Artemis)
  • François Impens (Laboratoire Artemis)
  • Samir Vartabi Kashanian (Laboratoire Artemis, INLN)
  • Farrokh Vakili (Observatoire de la Côte d’Azur)

Important Dates

Abstract Submission : February 28, 2014 (Abstract submission closed)

Registration Deadline : March 15, 2014

Workshop Dates : May 12-13, 2014


Fédération W. Döblin

Observatoire de la Côte d’Azur

Endorsed by IAU Commission 54 : Optical & Infrared Interferometry

IAU C54 logo




For further information and contact :

There is no registration fee but registration is mandatory.

Paul D. Nuñez : paul.nunez@oca.eu

Les présentations

Detailed program

Overview, talk schedule, list of participants

Astronomical Imaging a Thousand Times Sharper than Hubble

Author : Dainis Dravins

Feasibility of obtaining phase information using three-point HBT

Author : Wentz

The Hanbury Brown Twiss effect for matter waves

Author : Westbrook

Optical Systems for the Cherenkov Telescope Array

Author : Okumura

Intensity Interferometry with the ASTRI/CTA mini array

Author : Rodeghiero

Intensity Interferometry with single photon avalanche photodiodes

Author : Pilyavsky

Reviving Stellar Intensity Interferometry with CTA

Author : Lagadec

Closing remarks

Author : Vakili

Current issues in coherence for small laser sources

Author : Lippi

Stellar Intensity Interferometry (SII) Development at StarBase-Utah

Author : Kieda

Intensity Interferometry with SPAD Detectors at SCS University

Author : Horch

Intensity interferometry for imaging dark objects

Author : Strekalov

Long-baseline Intensity Interferometry

Author : Ribak

Towards quantum telescopes : Can Quantum Optics serve astronomy ?

Author : Kellerer

Capabilities of Future Intensity Interferometers

Author : Nunez

Measuring Temporal Photon Bunching from a Blackbody

Author : Pengkian

HBT type measurements in quantum optics experiments

Author : Tanzilli

Towards higher-order HBT astronomical interferometry

Author : Malvimat

A random laser with cold atoms

Author : Guerin