I have recently listened to a podcast by Sean Carroll and Leonard Susskind (strongly recommended https://www.preposterousuniverse.com/podcast/2019/05/06/episode-45-leonard-susskind-on-quantum-information-quantum-gravity-and-holography/) on quantum gravity and how quantum information comes into play. Now I'm not an expert on either subject though I have a fairly good understanding of quantum theory and general relativity. I'd like to understand how quantum computing/information is connected to gravity in a more rigorous manner.
So my question really is, what is the specific connection between quantum information and quantum gravity? Can you also include sources?