Skisma

Skisma er betegnelse for (kirkelig) spaltning, splittelse eller brud. Det tilhørende tillægsord er skismatisk. ---- Se også det store skisma

Det store skisma

Betegnelsen Det store skisma er blevet brugt både om skismaet mellem Konstantinopel og Rom i 1054, den vestlige kirkes skisma i 1309, da der oprettedes en pavestol i Avignon og skismaet i den vestlige kirke 1378-1414, hvor der var en række modpaver i både Avignon og Pisa

Se også:

- det store skisma 1054. Kategori:Kristendom

Entanglement

Kvantefysisk sammenfiltring eller kvantemekanisk sammenfiltring (eng. quantum entanglement) er et kvantemekanisk fænomen, hvor det er nødvendigt at beskrive den kvantemekaniske tilstand for to eller flere objekter som en helhed, selvom de enkelte objekter kan være rumligt forskellige steder. Dette betyder at (observerbare) fysiske egenskaber ved de enkelte objekter er korrelerede på en langt "stærkere" måde end enhver klassisk påvirkning kan forklare. Resultatet er at målinger udført på det ene objekt kan fortolkes som at influere andre objekter som objektet er sammenfiltret med.

Kilde/reference

- Kilde til navnet Kvantefysisk sammenfiltring: [http://ntserv.fys.ku.dk/hco/presse/polzik.htm Polzik: Professor i kvanteoptik]

Se også

- kvanteteleportation

Eksterne henvisninger

- [http://www.idmon.freeserve.co.uk/quant3.htm The Quantum World, EPR:- Spooky Connections (entanglement)] Citat: "...Quantum theory upset Einstein because it gave him nothing better to grapple with than frustrating probabilities. In 1936, he got together with Boris Podolsky and Nathan Rosen to create the "EPR paradox". It's ironic that the spooky EPR connection has now been used in the lab to teleport photons, because the original reason for inventing the EPR paradox was to show that one of the implications of quantum theory was so unacceptable that it must be wrong or incomplete in some respect...."
- [http://physicsweb.org/article/news/7/9/2 3 September 2003, PhysicsWeb: Entanglement goes macroscopic]
- [http://physicsweb.org/article/world/15/9/8/1 Feature: September 2002, PhysicsWeb: Atomic entanglement on a grand scale] Citat: "...Erwin Schrödinger considered it to be the most profound characteristics of quantum mechanics and Albert Einstein called it spooky..."
- [http://edition.cnn.com/TECH/9712/10/beam.me.up.ap/ December 10, 1997 Science fact: Scientists achieve 'Star Trek'-like feat] Citat: "... If the notion of entanglement leaves your head spinning, don't feel bad. Zeilinger said he doesn't understand how it works either. "And you can quote me on that," he said. [http://www.quantum.univie.ac.at/zeilinger/ Prof. Anton Zeilinger]..."
- [http://web.archive.org/web/20010211193012/http://www.newscientist.com/ns/970628/nlight_nf.html Web archive mirror: New Scientist, 28 June 1997: "Light's spooky connections set distance record"]
- [http://www.aip.org/enews/physnews/2003/split/655-1.html Number 655 #1, September 26, 2003, Physics News Update: An Ultrabright Tunable Photon-Pair Source] Citat: "...best generator so far of entangled photon pairs..."
- [http://xxx.lanl.gov/abs/quant-ph/0006111 Many-particle entanglement with Bose--Einstein condensates] Artikel kan frit downloades.
- [http://physicsweb.org/article/news/8/6/18 30 June 2004, Physicsweb: Entanglement breaks new record] Citat: "...Physicists have succeeded in entangling five photons for the first time. Although four photons have been entangled before, five is the minimum number needed for universal error correction in quantum computation. Moreover, the same team has demonstrated a process called "open-destination teleportation" for the first time (Z Zhao et al. 2004 Nature 430 54). The results represent a major breakthrough in efforts to exploit the laws of quantum mechanics in quantum information processing..."
- [http://arxiv.org/abs/quant-ph/0402096 Experimental Demonstration of Five-photon Entanglement and Open-destination Teleportation]
- [http://www.sciencedaily.com/releases/2004/05/040513010953.htm 2004-05-13, Sciencedaily: Physicists 'Entangle' Light, Pave Way To Atomic-scale Measurements] Citat: "...The findings could ultimately prove useful in developing ways to measure gravitational waves or the energy structure of atoms, and could also help in the development of "quantum computers."..."
- [http://www.cerncourier.com/main/article/44/6/8 2004, CERNcourier: Entangled photons show interference and bilocation] Kategori:Kvantemekanik

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