Communication between general-relativistic observers without a shared reference frame

Communication between general-relativistic observers without a shared reference frame

Seminar author:Agata Checinska

Event date and time:02/25/2015 02:30:pm

Event location:IFAE seminar room

Event contact:

We show how to reliably encode quantum information and send it between two arbitrary general-relativistic observers without a shared reference frame. Any information stored in a quantum field will inevitably be destroyed by an unknown Bogolyubov transformation relating the observers. However certain quantum correlations between different, independent fields will be preserved, no matter what transformation is applied. We show how to efficiently use these correlations in communication between arbitrary observers.