A teleportation protocol in Schwarzschild-de Sitter space

We propose a new information transfer protocol for de Sitter space, using black holes as energy reservoirs. We consider antipodal observers in pure de Sitter space in the Bunch-Davis state. They can store Hawking modes from the cosmological horizon in a box. Alternatively, due to thermal fluctuations in de Sitter space, pair-creation black holes can proceed and form the needed energy reservoir. We focus on the Nariai case, corresponding to an equilibrium state. Once it happens, energy pulses can be then released into the black hole's interior, opening a traversable wormhole. We provide bounds for the amount of information that can be transferred. Specializing to (1+1)-dimensions, we explore how the teleportation protocol leads to an explicit geometric description of the information transmitted through an island region. The protocol uncovers quantum information aspects of de Sitter space, independent of a particular realization of de Sitter space holography.
Comment: 16 pages + appendices