Communication between general-relativistic observers without a shared reference frame

Abstract

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.

5 pages, extended "Example" section

References in corpus (2)

• Classical and quantum communication without a shared reference frame
• Preserving Information from the Beginning to the End of time in a Robertson-Walker Spacetime

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