Téléportation Quantique


L'Article

C.H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres, and W. Wootters.
Teleporting an unkown quantum state by dual classical and EPR channels.
Physical Review Letter , 70:1895-1898, 1993.
[ DVI / PS / GZIP/PS ]

Tutoriel de Téléportation Quantique

[PHOTO]
introduction à l'optique quantique

[PHOTO][PHOTO][PHOTO]
l'effet E.P.R.


la téléportation quantique


Les Auteurs

Richard, Bill, Charles


Gilles, Claude, Asher



IBM Quantum Teleportation Page


NOUVELLES


From: Gilles Brassard
Subject: téléportation
To: theorique@IRO.UMontreal.CA
Date: Fri, 4 Jul 1997 15:12:20 -0400 (EDT)

Grande nouvelle!

Francesco de Martini, de la Sapienza a Rome,
vient d'annoncer qu'il a réussi la première
téléportation [quantique] ce matin à 6 heures!

- Gilles

PS il s'agit de photons. Polarisation ET position. (Une idée de Popescu)


From: "ANTON ZEILINGER" -Anton.Zeilinger@uibk.ac.at-
To: bennettc@watson.ibm.com, brassard@IRO.UMontreal.CA,
crepeau@IRO.UMontreal.CA, P08205@prime-a.plymouth.ac.uk,
peres@photon.technion.ac.il, William.K.Wootters@williams.edu
Date: Fri, 19 Sep 1997 17:27:48 +0100

Dear Colleagues:

You all as the originators of the teleportation paper will certainly
be happy to learn that we finally succeeded in realizing your
proposal. What we did was to use the HV+VH state (up to an internal
phase factor which is free to adjust) for the ancillary. We sent one
of the two photons onto the Bell State analyzer where it meets the
photon to be teleported. That photon we polarized at +45
degrees. Thus it is prepared in an equal coherent superposition of H
and V. For reason of having as few optical components as possible we
only analyze for the psi-minus state, i.e. HV - VH. The other
ancillary then is found to be also in the +45 degree
state. The experiment necessitated to use very short laser pulses
(ca. 200 fs) to provide high enough probability for the ancillary to
meet the photon to be teleported.

The data are very coarse but the effect is clearly visible. We are
busy improving the data and adding new measurements. Yet the data
rate is awfully slow. We typically have 1 three-fold coincidence per second.

The people in the work are
D. Bouwmeester, J.W. Pan, M. Eibl, K. Mattle, H. Weinfurter, A.Z.

All the best
Anton

Anton Zeilinger
Institut fuer Experimentalphysik
Universitaet Innsbruck
Technikerstrasse 25
A-6020 Innsbruck
Austria


Dans "Nature"


L'article "Experimental Qunatum Teleportation" et ses figures (fig. 1,2) (fig. 3,4,5)


Équipe d'Innsbruck


Paper: quant-ph/9811020
From: Michael Nielsen
Date: Sun, 8 Nov 1998 22:44:19 GMT (18kb)

Title: Complete quantum teleportation using nuclear magnetic resonance
Authors: M. A. Nielsen, E. Knill, and R. Laflamme
Comments: 15 pages, 2 figures. Minor differences between this and the published
version
Journal-ref: Nature vol 395, 5 November 1998

\\
Quantum mechanics provides spectacular new information processing abilities
(Bennett 1995, Preskill 1998). One of the most unexpected is a procedure called
quantum teleportation (Bennett et al 1993) that allows the quantum state of a
system to be transported from one location to another, without moving through
the intervening space. Partial implementations of teleportation (Bouwmeester et
al 1997, Boschi et al 1998) over macroscopic distances have been achieved using
optical systems, but omit the final stage of the teleportation procedure. Here
we report an experimental implementation of the full quantum teleportation
operation over inter-atomic distances using liquid state nuclear magnetic
resonance (NMR). The inclusion of the final stage enables for the first time a
teleportation implementation which may be used as a subroutine in larger
quantum computations, or for quantum communication. Our experiment also
demonstrates the use of quantum process tomography, a procedure to completely
characterize the dynamics of a quantum system. Finally, we demonstrate a
controlled exploitation of decoherence as a tool to assist in the performance
of an experiment.


Dans "Nature / Quantum Physics archive, Los Alamos"

Complete quantum teleportation using nuclear magnetic resonance, November 5,1998

Subject: teleportation or levitation?
Date: Fri, 23 Oct 1998 18:25:22 +0200 (IST)
From: Asher Peres
To: bennetc@watson.ibm.com, brassard@IRO.UMontreal.CA,
cfuchs@cco.caltech.edu, crepeau@cs.mcgill.ca,
hjkimble@cco.caltech.edu, rjozsa@plymouth.ac.uk,
schmuel@sees.bangor.ac.uk, william.k.wootters@williams.edu

Dear friends,

Today, in the newspaper "Haaretz" (considered as the most serious in
Israel), there was an article on three columns "Scientists in California
claim: we succeeded in moving objects without contact... They claim
having moved objects along a bench in a laboratory."

My first guess was that they had levitated something (I recently read an
article on magnetic levitation in Physics Today). But the article
actually mentioned TELEPORTATION (not levitation), namely, motion of
objects without contact. The scientists told that they had transported
objects on a light ray, along a bench. Now doubt it's you: the name of
Jeff Kimble appears in that article (in Hebrew characters, of course).
Congratulations!

Now, I am really worried. Can I believe anything in "Haaretz"? This is
also my source for political and economic news.

Best,

Asher


Revue de presse

Dans "La Presse" Téléportation, M. Scott!, 6 décembre 1993
Dans "Nature" News and Views, December 11, 1998
Experimental Quantum Teleportation, December 11, 1998
Dans "Scientific American" Scientific American: Explorations: "Beam Me Up", December 22, 1997
Dans "Pour la Science" Copie d'une particule à distance, février 1998
Dans "Québec Science" Téléportation : c'est parti ! , octobre 1998
texte complémentaire de l'auteur
Dans "Physics News" Physics News Graphics: Quantum Teleportation
Dans "Physics World" Who was first? March 1998
Fundamentals of Quantum Information, March 1998
Dans "Le Monde" D'après un article publié dans Le Monde, 18 Décembre 1997
Dans "Discovery Online" Discovery Online, Discovery News, 12 December 1997
Chez "ABC News" Beam Me Up, Scotty, December 10, 1997
Dans "Caltech MEDIA Relations" Caltech physicists achieve first bona fide quantum teleportation, October 22, 1998
Dans "Science" Unconditional quantum teleportation, October 23, 1998
QUANTUM TELEPORTATION: Enhanced: A Tale of Two Cities, October 23, 1998
Chez "CNN interactive" Spooky teleportation study brings future closer, October 22, 1998
Chez "ABC News" Beam Up the Photons, October 22, 1998
Chez "NBC News" Physicists make a quantum leap, October 22, 1998
Dans "Albuquerque Journal" Scientists Beam Up Some 'Star Trek' Tech, October 22, 1998
Chez "ITN" Teleportation, but not as we know it, October 23, 1998
Dans "The TORONTO STAR" Beam me up? Not yet, but scientists one step closer, October 23, 1998
Dans "Detroit Free Press" Light beam's short trip may be a quantum leap, October 23, 1998
Chez "BBC News" Not quite beam me up Scotty!, October 26, 1998
Chez "Electronic Telegraph" Beam me up Scotty (Take your time), November 26, 1998
Chez "Australian Broadcasting Corp." It's teleportation Jim, but not as we know it, November 27, 1998
Chez "Popular Mechanics" BEAM ME UP, December 1998
Chez "CNN interactive" Science fact: Scientists achieve 'Star Trek'-like feat, December 10, 1998
Chez "AP Wire service" Science's top 10 of 1998, December 17, 1998
Chez "CNN interactive" Science's top 10 of 1998, December 18, 1998
Dans "The INDEPENDENT" Get ready to be beamed up, Scotty, October 23, 1998
Dans "The DAILY POST" BEAM ME UP, October 23, 1998
Dans "The EVENING STANDARD" BEAM ME UP, October 23, 1998
Dans "The EXPRESS" Beam me up, doc, October 24, 1998
Dans "The DAILY RECORD" Beamish me up, October 24, 1998
Dans "New Scientist" Beam me up, October 31, 1998
Dans "WELT am SONNTAG" Interview mit Mr. Beam, November 1st, 1998
Dans "HA'ARETZ" November 24, 1998
Dans "The DAILY TELEGRAPH" Beam me up, now, Scotty?, November 25, 1998

Pour s'amuser


[PHOTO]

Chez Samuel Braunstein

A fun talk on teleportation / Un ExposÚ Amusant sur la TÚlÚportation
[PHOTO]

© Dernière Heure


Dans "The SUN"

BEAM ME UP TAFFY, October 23, 1998

From: "Charles H. Bennett"
Organization: IBM Research
Date: Thu, 22 Jul 1999 04:15:51 -0400
To: "brassard@IRO.UMontreal.CA, crepeau@cs.mcgill.ca,
R.Jozsa@plymouth.ac.uk, peres@photon.technion.ac.il,
william.k.wootters@williams.edu, eiss_office@ira.uka.de,
hac100@york.ac.uk, gdyer@student.med.harvard.edu,
esop8@juno.com, smolin@watson.ibm.com,
ashish@watson.ibm.com
Subject: First teleportation of a small hairy animal

The discoverers of quantum teleportation gather
six years later to witness application of their
technique. In the first picture the teleportus
has not yet undergone the final Pauli rotation.



[PHOTO]
[PHOTO]

Dernière mise à jour: 27 septembre 1999

Claude CRÉPEAU (crepeau@CS.McGill.CA)