- P. Michler, University of Stuttgart (confirmed)
- V. Zwiller, KTH (confirmed)
- G. Solomon, University of Maryland (confirmed)
- E. Pelucchi, Tyndall National Institute (confirmed)
- N. Gregersen, Technical University of Denmark (confirmed)
- S. Sanguinetti , University of Milano Bicocca (confirmed)
- P. Senellart, CNRS Paris (confirmed)
- B. Gerardot, Heriot-Watt University (confirmed)
- S. Reitzenstein, Technical University of Berlin (confirmed)
- C. Schneider, University of Würzburg (confirmed)
- F. Sciarrino, Sapienza University (confirmed)
- G. Vallone, University of Padova (confirmed)
- J. M. Gerard, CEA Grenoble (confirmed)
- M. Felici, Sapienza University (confirmed)
- C. Schimpf, Johannes Kepler University (confirmed)
- J. Finley, Technical University of Munich (confirmed)
- M. Jezek, Palacky University (confirmed)
- C. Becher, Saarland University (confirmed)
- A. Predojevic, Stockholm University (confirmed)
- R. Warburton, University of Basel (confirmed)
- M. Reimer, University of Waterloo (confirmed)
- C. Toninelli, LENS University of Florence (confirmed)
- K. Srinivasan, NIST (confirmed)
- E. Figueroa, Stony Brook University (confirmed)
- G. Weihs, Innsbruck University (confirmed)
June 22, 2021