Schematic video demonstrating individual steps of quantum teleportation. A quantum state Q is sent from station A to station B using a pair of entangled particles created by source S. Station A measures its two particles and communicates the result to station B, which chooses an appropriate device based on the received message. Due to the action of the device, the state of the particle of station B turns into Q.
Quantum teleportation is a technique for transferring quantum information from a sender at one location to a receiver some distance away. While teleportation is commonly portrayed in science fiction as a means to transfer physical objects from one location to the next, quantum teleportation only transfers quantum information. The sender does not have to know the particular quantum state being transferred. Moreover, the location of the recipient can be unknown, but to complete the quantum teleportation, classical information needs to be sent from sender to receiver. Because classical information needs to be sent, quantum teleportation cannot occur faster than the speed of light.
One of the first scientific articles to investigate quantum teleportation is "Teleporting an Unknown Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels"[1] published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres, and W. K. Wootters in 1993, in which they proposed using dual communication methods to send/receive quantum information. It was experimentally realized in 1997 by two research groups, led by Sandu Popescu and Anton Zeilinger, respectively.[2][3]
Experimental determinations[4][5] of quantum teleportation have been made in information content – including photons, atoms, electrons, and superconducting circuits – as well as distance, with 1,400 km (870 mi) being the longest distance of successful teleportation by Jian-Wei Pan's team using the Micius satellite for space-based quantum teleportation.[6]
^Bennett, Charles H.; Brassard, Gilles; Crépeau, Claude; Jozsa, Richard; Peres, Asher; Wootters, William K. (29 March 1993). "Teleporting an Unknown Quantum State via Dual Classical and Einstein–Podolsky–Rosen Channels". Physical Review Letters. 70 (13): 1895–1899. Bibcode:1993PhRvL..70.1895B. CiteSeerX 10.1.1.46.9405. doi:10.1103/PhysRevLett.70.1895. PMID 10053414.
^Cite error: The named reference Rome1998 was invoked but never defined (see the help page).
^Cite error: The named reference :02 was invoked but never defined (see the help page).
^Tianfeng Feng; Qiao Xu; Linxiang Zhou; Maolin Luo; Wuhong Zhang; Xiaoqi Zhou (2022). "Quantum information transfer between a two-level and a four-level quantum systems". Photonics Research. 10 (12): 2854. arXiv:2009.09421. doi:10.1364/PRJ.461283. S2CID 247011044.
^Chang, Kenneth (17 June 2004). "Scientists Teleport not Kirk but an Atom". New York Times.
^Cite error: The named reference sat1400 was invoked but never defined (see the help page).
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