Simulating Indefinite Causal Order With Rindler Observers

Autor(en)

Aleksandra Dimić, Marko Milivojević, Dragoljub Gočanin, Natália S. Móller, Časlav Brukner

Abstrakt

Realization of indefinite causal order (ICO), a theoretical possibility that even causal relations between physical events can be subjected to quantum superposition, apart from its general significance for the fundamental physics research, would also enable quantum information processing that outperforms protocols in which the underlying causal structure is definite. In this paper, we start with a proposition that an observer in a state of quantum superposition of being at two different relative distances from the event horizon of a black hole, effectively resides in ICO space-time generated by the black hole. By invoking the fact that the near-horizon geometry of a Schwarzschild black hole is that of a Rindler space-time, we propose a way to simulate an observer in ICO space-time by a Rindler observer in a state of superposition of having two different proper accelerations. By extension, a pair of Rindler observers with entangled proper accelerations simulates a pair of entangled ICO observers. Moreover, these Rindler-systems might have a plausible experimental realization by means of optomechanical resonators.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

University of Belgrade, Federal University of Minas Gerais (UFMG), Technische Universität Kaiserslautern, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Frontiers in Physics

Band

8

Seiten

525333

Anzahl der Seiten

7

ISSN

2296-424X

DOI

https://doi.org/10.3389/fphy.2020.525333

Publikationsdatum

10-2020

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik, 103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie, Biophysics, Mathematical Physics, Physical and Theoretical Chemistry, Materials Science (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/38725f1e-c175-4b46-81f9-d47ea33fa629