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</o:shapelayout></xml><![endif]--></head><body lang=SL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Vabimo vas na 12. predavanje iz sklopa "Kolokviji na IJS" v letu 2015/16, ki bo<span style='color:red'> <b>v ponedeljek, 21. marca 2016, ob 13. uri </b>v Veliki predavalnici Instituta »Jožef Stefan«<b> </b></span>na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu <a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>. <o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></p><p class=MsoNormal><b><span lang=EN-US>prof. dr. Anton Zeilinger<o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US>Univerza na Dunaju, Dunaj, Avstrija <o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:center'><b><span lang=EN-US style='font-size:14.0pt'>Kvantna teleportacija, prepletenost in Einsteinovo vprašanje “Kaj je svetloba?”<o:p></o:p></span></b></p><p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:center'><b><span lang=EN-US style='font-size:14.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal style='text-align:justify;text-autospace:none'>Dobro znano je, da je Einstein dobil Nobelovo nagrado za prelomno zamisel iz svojega čude<span style='color:#262626'>ž</span>nega leta 1905, da svetloba sestoji iz delcev, ki jim danes pravimo fotoni. L. 1935 je skupaj s Podolskim in Rosenom odkril, da sta lahko dva kvantna sistema povezana tesneje kot v klasični fiziki. Avstrijski nobelovec Erwin Schrödinger je za to stanje skoval izraz “prepletenost” in ga imel za “bistveno lastnost kvantne mehanike”, Einstein pa ga je odslovil kot “zlovešče delovanje na daljavo”. <o:p></o:p></p><p class=MsoNormal style='text-align:justify;text-autospace:none'>Tehnični napredek pri ustvarjanju in rokovanju s prepletenimi stanji fotonov ni vodil le do eksperimentalne realizacije takih stanj, temveč tudi do odkritja novih pojavov vključno z večdelčno prepletenostjo in kvantno teleportacijo. Ti pojavi niso le intelektualne zanimivosti, ampak tvorijo podlago za novo informacijsko tehnologijo, ki sloni na konceptih, kot so kvantna komunikacija, kvantna kriptografija in kvantno računalništvo.<o:p></o:p></p><p class=MsoNormal style='text-align:justify;text-autospace:none'>V predavanju bomo predstavili nekatere najnovejše eksperimentalne rezultate, posebej v zvezi s kvantno komunikacijo na velikih razdaljah ter z implementacijo kvantnih stanj v večrazse<span style='color:#262626'>ž</span>nih Hilbertovih prostorih. Govorili bomo tudi o mo<span style='color:#262626'>ž</span>nih prihodnjih uporabi v kvantnih informacijskih sistemih. Ti vključujejo npr. eksperimente s satelitsko kvantno komunikacijo na globalni ravni.<o:p></o:p></p><p class=MsoNormal style='text-align:justify;text-autospace:none'>Proti koncu <span style='color:#262626'>ž</span>ivljenja je Einstein pripomnil, da se kljub letom zavestnega razglabljanja ni pribli<span style='color:#262626'>ž</span>al odgovoru na vprašanje “Kaj je svetloba?” Zanimivo bi bilo vedeti, kaj bi si mislil o teh nedavnih dose<span style='color:#262626'>ž</span>kih.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'>Predavanje bo v angleščini.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span style='font-family:"Calibri","sans-serif";color:red'>Lepo vabljeni!</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>We invite you </span>to the 12th Institute <span style='color:black'>colloquium in the academic year 2015/16. The colloquium will be held </span><b><span style='color:red'>on Monday March 21, 2016 at 13 PM</span></b><span style='color:red'> in <b>the main Institute lecture hall</b></span><span style='color:black'>, Jamova 39, Ljubljana. To read the abstract click </span><a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a><span style='color:#1F497D'>. </span><span style='color:black'>Past colloquia are posted on</span><span style='color:#1F497D'> </span><a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a><span style='color:#1F497D'>.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'>********************************************<b><o:p></o:p></b></p><p class=MsoNormal><b><span lang=EN-US>prof. dr. Anton Zeilinger<o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US>Universität Wien, Vienna, Austria <o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span lang=EN-US style='font-size:16.0pt'>Quantum Teleportation, Entanglement, and Einstein’s Question “What is Light?”<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:16.0pt;color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal>It is well known that Einstein received the Nobel Prize for the groundbreaking idea of 1905, his annus mirabilis, that light consists of particles, today called photons. In 1935, he discovered together with Podolsky and Rosen that two quantum systems can be connected stronger than in classical physics. For that situation the Austrian Nobel Prize winner Erwin Schrödinger coined the name “entanglement” and called it “the essential feature of quantum mechanics” while Einstein dismissed it as “spooky action at a distance”.<o:p></o:p></p><p class=MsoNormal>Technical progress in creating and handling entangled photon states not only led to experimental realization of such entangled states but also the discovery of novel phenomena, including, for example, multi-particle entanglement and quantum teleportation. These are not just intellectual curiosities, but they lay the foundations for a new information technology, with concepts such as quantum communication, quantum cryptography and quantum computation.<o:p></o:p></p><p class=MsoNormal>In the talk, I will present some of the most recent experimental results, particularly on long-distance quantum communication and on the implementation of quantum states in higher-dimensional Hilbert spaces. I will also discuss future possible applications in quantum information systems. These will, for example, include experiments using satellite-based quantum communication on a worldwide scale.<o:p></o:p></p><p class=MsoNormal>Towards the end of his life Einstein commented that despite years of conscious brooding, he did not come closer to answering the question “What is light?” It would be fascinating to know his position about these recent developments.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt'>Cordially invited!</span></b><o:p></o:p></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>