Details
| Original language | English |
|---|---|
| Publication status | E-pub ahead of print - 8 May 2024 |
Abstract
Keywords
- gr-qc, hep-th, quant-ph
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2024.
Research output: Working paper/Preprint › Preprint
}
TY - UNPB
T1 - The evolution of expanding spacetime realizes approximate quantum cloning
AU - Niermann, Laura
AU - Osborne, Tobias J.
PY - 2024/5/8
Y1 - 2024/5/8
N2 - We investigate how quantum information, encoded in a quantum field, evolves during the expansion of spacetime. Due to information loss across the horizon, a local observer experiences this evolution as a nonunitary quantum channel. We obtain this channel in the case of de Sitter spacetime by assuming the initial global state encodes a signal state via fluctuations of the Bunch-Davies vacuum. Notably, de Sitter evolution exhibits intriguing cloning properties, establishing a connection between the curvature of spacetime and the propagation of quantum information.
AB - We investigate how quantum information, encoded in a quantum field, evolves during the expansion of spacetime. Due to information loss across the horizon, a local observer experiences this evolution as a nonunitary quantum channel. We obtain this channel in the case of de Sitter spacetime by assuming the initial global state encodes a signal state via fluctuations of the Bunch-Davies vacuum. Notably, de Sitter evolution exhibits intriguing cloning properties, establishing a connection between the curvature of spacetime and the propagation of quantum information.
KW - gr-qc
KW - hep-th
KW - quant-ph
U2 - 10.48550/arXiv.2405.04965
DO - 10.48550/arXiv.2405.04965
M3 - Preprint
BT - The evolution of expanding spacetime realizes approximate quantum cloning
ER -