Authors: Kamil Brádler Christoph Adami
Publish Date: 2014/05/21
Volume: 2014, Issue: 5, Pages: 95-
Abstract
We study the properties of the quantum information transmission channel that emerges from the quantum dynamics of particles interacting with a black hole horizon We calculate the quantum channel capacity in two limiting cases where a singleletter capacity is known to exist the limit of perfectly reflecting and perfectly absorbing black holes We find that the perfectly reflecting black hole channel is closely related to the Unruh channel and that its capacity is nonvanishing allowing for the perfect reconstruction of quantum information outside of the black hole horizon We also find that the complementary channel transmitting entanglement behind the horizon is entanglementbreaking in this case with vanishing capacity We then calculate the quantum capacity of the black hole channel in the limit of a perfectly absorbing black hole and find that this capacity vanishes while the capacity of the complementary channel is nonvanishing instead Rather than inviting a new crisis for quantum physics this finding instead is in accordance with the quantum nocloning theorem because it guarantees that there are no spacelike surfaces that contain both the sender’s quantum state and the receiver’s reconstructed quantum stateThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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