A teleportation protocol in Schwarzschild-de Sitter space

TL;DR

This paper introduces a novel quantum teleportation protocol in de Sitter space using black holes as energy reservoirs, revealing new insights into information transfer and the geometry of de Sitter horizons.

Contribution

It proposes a new teleportation protocol leveraging black holes in de Sitter space, providing a geometric description of information transfer through island regions.

Findings

Bounds on the amount of information transferable are established.

The protocol offers an explicit geometric interpretation of information transmission.

It uncovers quantum information aspects of de Sitter space independent of holographic models.

Abstract

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, black holes formed through a pair-creation {process can be used} as energy reservoirs. We focus on the Nariai black hole case, which corresponds to an equilibrium state. Once the black hole is produced, energy pulses can be released into its interior, opening a traversable wormhole. We provide bounds for the amount of information that can be transferred. Specializing in (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, independently of any particular realization of de Sitter space holography.