Woesler, Richard
(2005)
*Proposal for transmission of classical information superluminally and slightly into the past using usual simplified quantum teleportation theory, special relativity and further assumptions.*
DLR-Interner Bericht.
DLR-IB 917-2005/2.

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## Kurzfassung

Using the usual simplified quantum teleportation theory of Bennett et al. we describe a scheme to teleport an unknown quantum multiple times and combine this scheme with results from special relativity. This would yield the prediction that it is possible to teleport an arbitrary unknown quantum state within an experimental setup with given probability to a point slightly within the past of the starting point. Using these results we give a theoretical proposal for that what one might call a time loop experiment with photon states. The polarization state of a photon is teleported to a far distant location with given probability, and from there within a second quantum teleportation setup, which moves with high speed in direction to the distant point, back close to the starting point with given probability. Due to special relativity, for a suitable experimental setup, the final photon would be close to the starting point, however, slightly in the past of it. Using appropriate moving and non-moving mirrors the frequency of the latter photon might be shifted so that it equals that of the starting photon. The phase of the final photon could be shifted using non-moving mirrors. One could try to use the final photon as input instead of the original photon completing in principle a space time loop. Including further transformations, an in principle instantaneous complete quantum teleportation might be achieved. However, the high accuracy necessary for these loop experiments might usually not be achieved practically. The experiments are modified so that the high accuracy is not needed and then the loops might almost always not constitute, and these modified experiments are extended, e.g., by quarter-wave plates. This might lead to interesting effects, e.g. to an increased reflection rate at the quarter-wave plates. It is described how the latter might eventually be used for superluminal transmission of classical information, and, in a certain sense, for transmission into the past. An analysis beyond this usual quantum teleportation and relativity theory which will include quantum field theory remains to be conducted in future.

Dokumentart: | Berichtsreihe (DLR-Interner Bericht) | ||||
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Zusätzliche Informationen: | 2005-8-25 A writing error is found in the document by the author: After eq. (11) the corrected text is: "Doing the experiment with ...". After eq. (12) the corrected text is: "Doing the experiment without ...". Further, the text before eq. (11) : "In the former case, e.g., the generation of at least one of the EPR-pairs might be suppressed, or a photon might be reflected at the quarter-wave plate, and two corresponding video camera detector systems with high detection probability, which can count the photons approximately, at the region IIb would together more often count only one photon. Let us assume that the rate that exactly one photon is detected close to IIb, i.e. summing up the results of both photon counting detectors at IIb, would be rII when the detector is not placed at (xb,tb), and that it would decrease to a value rd,II <rII when the detector is placed at (xb,tb), i.e." can be written more clearly as follows: "In the former case, e.g., the generation of at least one of the EPR-pairs might be suppressed, or a photon might be reflected at the quarter-wave plate, and two corresponding video camera detector systems with high detection probability, which can count the photons approximately, at the region IIb would taken together, i.e. summing up the results from both detectors within a small time interval around the detection event of one photon in one detector, more often count only one photon. The mentioned time interval is approximately the time interval which usually is the time interval in which two photons are detected when teleportation works in conventional teleportation experiments as in [2] (or, e.g., in the present experiment when an absorbing device is placed at (xb,tb)). Let us assume that the probability that exactly one photon is detected close to IIb, i.e. summing up the results of both photon counting detectors at IIb, would be rII when the detector is not placed at (xb,tb), and that it would decrease to a value rd,II <rII when the detector is placed at (xb,tb), i.e." | ||||

Titel: | Proposal for transmission of classical information superluminally and slightly into the past using usual simplified quantum teleportation theory, special relativity and further assumptions | ||||

Autoren: |
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Datum: | 15 August 2005 | ||||

Referierte Publikation: | Nein | ||||

Status: | veröffentlicht | ||||

Stichwörter: | special relativity, quantum theory, nonlocality, entanglement, no-cloning theorem | ||||

HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||

HGF - Programm: | Verkehr | ||||

HGF - Programmthema: | keine Zuordnung | ||||

DLR - Schwerpunkt: | Verkehr | ||||

DLR - Forschungsgebiet: | V VR - Verkehrsforschung | ||||

DLR - Teilgebiet (Projekt, Vorhaben): | NICHT SPEZIFIZIERT | ||||

Standort: | Berlin-Adlershof | ||||

Institute & Einrichtungen: | Institut für Verkehrsforschung | ||||

Hinterlegt von: | Andrea Dumong | ||||

Hinterlegt am: | 04 Jan 2006 | ||||

Letzte Änderung: | 12 Dez 2013 20:09 |

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