VIA lecture by Joseph Samuel "Gravity and decoherence: the double slit experiment revisited" was given on 22.09.2017. It's presentation is attached and the record is in VIA library
http://viavca.in2p3.fr/joseph_samuel.html
The following questions were put in Discussion:
Houri Ziaeepour: Comment: your experiments use gravity as a an external source to induce decoherence. The interesting case is an experiment which can induce quantum coherence. Do you think such an experiment would be possible ?
Sam: the thermal experiment is certainly possible. The gravity one is not just because the numbers are so small.
You are welcome to continue discussion in replies to this post!