How to Recover a Qubit That Has Fallen Into a Black Hole
High Energy Physics - Theory
2016-01-06 v3 General Relativity and Quantum Cosmology
Quantum Physics
Abstract
We demonstrate an algorithm for the retrieval of a qubit, encoded in spin angular momentum, that has been dropped into a no-firewall black hole. Retrieval is achieved analogously to quantum teleportation by collecting Hawking radiation and performing measurements on the black hole. Importantly, these methods only require the ability to perform measurements from outside the event horizon.
Keywords
Cite
@article{arxiv.1507.03592,
title = {How to Recover a Qubit That Has Fallen Into a Black Hole},
author = {Aidan Chatwin-Davies and Adam S. Jermyn and Sean M. Carroll},
journal= {arXiv preprint arXiv:1507.03592},
year = {2016}
}
Comments
6 pages v2: modified protocol to discuss total angular momentum, corrected typos, added references v3: updated with referee feedback