6. Evgeny O. Kiktenko and Sergey M. Korotaev, Causality in different formalisms of quantum teleportation treatment

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Volume 27: Pages 548-553, 2014

Causality in different formalisms of quantum teleportation treatment

Evgeny O. Kiktenko1,a)and Sergey M. Korotaev2

1Apt. 172 Bld. 7b Muranovskaya Str., Moscow 127349, Russia

2Apt. 92 Bld. 41 Microregion V, Troitsk, Moscow 142191, Russia


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.


Le voyage dans le temps conditionnel obtenu par téléportation quantique montre que pour un cas particulier, l'information peut remonter le temps. Pour étudier ce phénomène, nous avons mis en œuvre une analyse causale, qui est une méthode formelle servant à distinguer la cause de l'effet sans invoquer de relations temporelles. Nous avons envisagé deux approches pour examiner la téléportation : les formalismes du produit tensoriel et du retournement temporel. L'analyse causale révèle l'existence d'un flux temporel propre pour un qubit téléporté et montre que même dans un cas général, l'information correspondant à un avenir aléatoire peut remonter le temps.


Key words: Quantum Causality; Quantum Teleportation; Time-Reversal Formalism; Conditional Time Travel; Causal Analysis.


Received: July 23, 2013; Accepted: September 8, 2014; Published Online: September 25, 2014


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