Rupert Ursin

Rupert Ursin (born January 26, 1973) is an Austrian experimental physicist active in the field of quantum entanglement and communications. He is currently deputy director at the Institute for Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences.[1]

Education

Ursin completed his Masters diploma in 2001, then in December 2006 completed a PhD dissertation at University of Vienna on quantum teleportation over long distances. He continued with postdoctoral studies in 2007, and since 2013 has served as a research group leader at the IQOQI.[1]

Research

Ursin's research group is active in the field of quantum entanglement and communications.[2] In particular, the team demonstrated an example of loophole-free Bell inequality[3] and worked on quantum key distribution.[4]

In 2004, Ursin and colleagues from the Institute for Experimental Physics at the University of Vienna succeeded in the world's-first demonstration of quantum teleportation of a photon outside of the laboratory, sending it a distance of 600 meters across the River Danube.[5]

In 2007, Ursin's group succeeded in distributing entangled photons between the Canary Islands La Palma and Tenerife over a world-record distance of 144 km.[6]

In 2016, Ursin's group successfully tested entanglement in accelerated reference frames.[7]

Awards
  • 2009 Christian-Doppler-Prize[8]

Bibliography
gollark: I don't understand what you're saying still.
gollark: What?
gollark: No. The limit is the value it approaches as you increase x to get closer to infinity.
gollark: Dubious.
gollark: means "you can pick a sufficiently large value of x such that it will get as close as you want to 0".

References
  1. "Rupert Ursin". www.iqoqi-vienna.at. Retrieved 2018-02-16.
  2. Aspect, Alain (2015-12-16). "Viewpoint: Closing the Door on Einstein and Bohr's Quantum Debate". Physics. 8.
  3. Giustina, Marissa; Versteegh, Marijn A. M.; Wengerowsky, Sören; Handsteiner, Johannes; Hochrainer, Armin; Phelan, Kevin; Steinlechner, Fabian; Kofler, Johannes; Larsson, Jan-Åke (2015-12-16). "Significant-Loophole-Free Test of Bell's Theorem with Entangled Photons". Physical Review Letters. 115 (25): 250401. arXiv:1511.03190. Bibcode:2015PhRvL.115y0401G. doi:10.1103/PhysRevLett.115.250401. PMID 26722905.
  4. Steinlechner, Fabian; Ecker, Sebastian; Fink, Matthias; Liu, Bo; Bavaresco, Jessica; Huber, Marcus; Scheidl, Thomas; Ursin, Rupert (2017-07-24). "Distribution of high-dimensional entanglement via an intra-city free-space link". Nature Communications. 8: 15971. arXiv:1612.00751. Bibcode:2017NatCo...815971S. doi:10.1038/ncomms15971. PMC 5527279. PMID 28737168.
  5. Graham, Sarah. "Quantum Teleportation across the Danube Demonstrated". Scientific American. Retrieved 2018-02-16.
  6. Ursin, R.; Tiefenbacher, F.; Schmitt-Manderbach, T.; Weier, H.; Scheidl, T.; Lindenthal, M.; Blauensteiner, B.; Jennewein, T.; Perdigues, J. (2007). "Entanglement-based quantum communication over 144 km". Nature Physics. 3 (7): 481–486. arXiv:quant-ph/0607182. Bibcode:2007NatPh...3..481U. doi:10.1038/nphys629. ISSN 1745-2481.
  7. Fink, Matthias; Rodriguez-Aramendia, Ana; Handsteiner, Johannes; Ziarkash, Abdul; Steinlechner, Fabian; Scheidl, Thomas; Fuentes, Ivette; Pienaar, Jacques; Ralph, Timothy C. (2017-05-10). "Experimental test of photonic entanglement in accelerated reference frames". Nature Communications. 8: 15304. arXiv:1608.02473. Bibcode:2017NatCo...815304F. doi:10.1038/ncomms15304. PMC 5436216. PMID 28489082.
  8. Rupert Ursin receives Christian-Doppler-Prize 2009 Archived 2015-05-03 at the Wayback Machine. 22 June 2010, retrieved on 03 May 2015.
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