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Physics Essays, 2014, Volume 27, Issue 4, Pages 548–553 (Mi phess1)  

Causality in different formalisms of quantum teleportation treatment

E. O. Kiktenkoab, S. M. Korotaevab

a Bauman Moscow State Technical University, 2-nd Baumanskaya, 5, 105005, Moscow, Russia
b Geoelectromagnetic Research Centre of Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, P.O. 30, Troitsk, Moscow Region 142190, Russia

Abstract: Conditional time travel through quantum teleportation shows that for a particular case, information is able to travel backward in time. To investigate this phenomenon, we implemented causal analysis, which is a formal method to distinguish between cause and effect without invoking time relations. We considered two approaches to examine teleportation: the tensor product and time-reversal formalisms. The causal analysis reveals the existence of an own time flow for a teleporting qubit and shows that even for a general case, the information regarding a random future is able to travel backward in time.

Funding Agency Grant Number
Russian Foundation for Basic Research 12-05-00001
12-05-98009
Ministry of Education and Science of the Russian Federation SP-961.2013.5
This work was supported by RFBR (grants 12-05-00001 and 12-05-98009) and Council for Grants of the President of the Russian Federation (grant SP-961.2013.5).


DOI: https://doi.org/10.4006/0836-1398-27.4.548


Document Type: Article
Language: English

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