Rupert Ursin

Group Leader
Ursin Group

Deputy Director
IQOQI Vienna

Contact
(+ 43) 664 8847 6595
rupert.ursin(at)oeaw.ac.at

Office Location
Boltzmanngasse 3, A-1090 Vienna
Fourth floor, Room 4.10

Curriculum Vitae



Publications


Dr. Rupert Ursin is a group leader and senior scientist at the IQOQI. His main field of research is to develop quantum communication and quantum information processing technologies, mainly for free-space, but also for fibre-based systems. The scope of his work ranges from near term engineering solutions for secure key sharing (quantum cryptography) to more speculative research (de-coherence of entangled states in gravitational fields). Experiments on quantum communication and teleportation using entangled photon pairs is also among his interests, with the long- term goal of a future global quantum network based on quantum repeaters. He has been experimentally active in numerous international collaborations in Germany, Italy, Spain, USA as well as in China and Japan. Lead several ESA funded projects as well as on the national and EU level. These allowed him to perform highly recognized experimental studies e.g. on a 144 km free-space link between La Palma and Tenerife [1] (cited more than 450 times). His group is performing time-energy entanglement distribution over a turbulent atmosphere just recently [5]. To date he and his publication recived several international awards and prizes. He was invited to several prestigious conferences to deliver talks (e.g. IEEE, SPIE, QCMC and others) and serves to important conferences as a program committee member e.g. ICSOS, SPIE, QCrypt and others. He currently holds a guest professorship at the University of Science and Technology (USTC) in Shanghai, China.

 

Research interests


Research interests include fundamental physics experiments on topics related to quantum optics and quantum information and their applications. Focus on the development of technologies required to perform space-based experiments concerning quantum information technologies. Numerous project partners in various fields (academic as well as industrial) together with national space agencies and the European Space Agency (ESA) are involved in this project. Contacts to international collaborators in Japan, China and USA are important partners to perform quantum communication on a global scale.

  • Quantum Information science
  • Quantum cryptography
  • Space science
  • Space Technology

Education / Professional History:


Research / Career History:


A more detailed CV is available upon request.

Publications

Full publications list 

  • Polarization Entanglement by Time-Reversed Hong-Ou-Mandel Interference
    Y. Chen, S. Ecker, S. Wengerowsky, L. Bulla, S.K. Joshi, Steinlechner, R. Ursin
    Physical Review Letters 121, 200502 (2018)
  • Comparative study of afterpulsing behavior and models in single photon counting avalanche photo diode detectors
    A.W. Ziarkash, S.K. Joshi, M. Stipcevic, R. Ursin
    Scientific Reports 8, 5076 (2018)
  • Satellite-Relayed Intercontinental Quantum Network
    S.-K. Liao, W.-Q. Cai, J. Handsteiner, B. Liu, J. Yin, L. Zhang, D. Rauch, M. Fink, J.-G. Ren, W.-Y. Liu, Y. Li, Q. Shen, Y. Cao, F.-Z. Li, J.-F. Wang, Y.-M. Huang, L. Deng, T. Xi, L. Ma, T. Hu, L. Li, N.-L. Liu, F. Koidl, P. Wang, Y.-A. Chen, X.-B. Wang, M. Steindorfer, G. Kirchner, C.-Y. Lu, R. Shu, R. Ursin, T. Scheidl, C.-Z. Peng, J.-Y. Wang, A. Zeilinger, J.-W. Pan
    Physical Review Letters 120, 030501 (2018)
  • Distribution of high-dimensional entanglement via an intra-city free-space link
    F. Steinlechner, S. Ecker, M. Fink, B. Liu, J. Bavaresco, M. Huber, T. Scheidl, R. Ursin
    Nature Communications 8, 15971 (2017)
  • Experimental test of photonic entanglement in accelerated reference frames
    M. Fink, A. Rodriguez-Aramendia, J. Handsteiner, A. Ziarkash, F. Steinlechner, T. Scheidl, I. Fuentes, J. Pienaar, T.C. Ralph, R. Ursin
    Nature Communications 8, 15304 (2017)
  • CubeSat quantum communications mission
    D.K.L. Oi, A. Ling, G. Vallone, P. Villoresi, S. Greenland, E. Kerr, M. Macdonald, H. Weinfurter, H. Kuiper, E. Charbon, R. Ursin
    EPJ QUANTUM TECHNOLOGY 4, 6 (2017)
  • Cosmic Bell Test: Measurement Settings from Milky Way Stars
    J. Handsteiner, A.S. Friedman, D. Rauch, J. Gallicchio, B. Liu, H. Hsop, J. Kofler, D. Bricher, M. Fink, C. Leung, A. Mark, H.T. Nguyen, I. Sanders, F. Steinlechner, R. Ursin, S. Wengerowsky, A.H. Guth, D.I. Kaiser, T. Scheidl, A. Zeilinger
    Physical Review Letters 118, 060401 (2017)
  • Quantum Communication with Photons
    M. Krenn, M. Malik, T. Scheidl, R. Ursin, A. Zeilinger
    In: Optics in our Time, Springer International Publishing (2016, 455-482)
  • Twisted light transmission over 143 km
    M. Krenn, J. Handsteiner, M. Fink, R. Fickler, R. Ursin, M. Malik, A. Zeilinger
    Proceedings of the National Academy of Sciences 113, 13648-13653 (2016)
  • Attacks on quantum key distribution protocols that employ non-ITS authentication
    C. Pacher, A. Abidin, T. Lorünser, M. Peev, R. Ursin, A. Zeilinger, J.-Å. Larsson
    Quantum Information Processing 15, 327-362 (2016)
  • Significant loophole-free test of Bell's theorem with entangled photons
    M. Giustina, M.A.M. Versteegh, S. Wengerowsky, J. Handsteiner, A. Hochrainer, K. Phelan, F. Steinlechner, J. Kofler, J.-Å. Larsson, C. Abellán, W. Amaya, V. Pruneri, M.W. Mitchell, J. Beyer, T. Gerrits, A.E. Lita, L.K. Shalm, S.W. Nam, T. Scheidl, R. Ursin, B. Wittmann, A. Zeilinger
    Physical Review Letters 115, 250401 (2015)
  • A Simple and Robust Method for Estimating Afterpulsing in Single Photon Detectors
    G. Humer, M. Peev, C. Schaeff, S. Ramelow, M. Stipcevic, R. Ursin
    J. Lightwave Technol. 33, 3098-3107 (2015)
  • An On-Demand Optical Quantum Random Number Generator with In-Future Action and Ultra-Fast Response
    M. Stipcevic, R. Ursin
    Sci Rep 5, 10214 (2015)
  • Macroscopic quantum resonators (MAQRO): 2015 Update
    R. Kaltenbaek, M. Arndt, M. Aspelmeyer, P.F. Barker, A. Bassi, J. Bateman, K. Bongs, S. Bose, C. Braxmaier, Č. Brukner, B. Christophe, M. Chwalla, P.-F. Cohadon, A.M. Cruise, C. Curceanu, K. Dholakia, K. Döringshoff, W. Ertmer, J. Gieseler, N. Gürlebeck, G. Hechenblaikner, A. Heidmann, S. Herrmann, S. Hossenfelder, U. Johann, N. Kiesel, M. Kim, C. Lämmerzahl, A. Lambrecht, M. Mazilu, G.J. Milburn, H. Müller, L. Novotny, M. Paternostro, A. Peters, I. Pikovski, A. Pilan-Zanoni, E.M. Rasel, S. Reynaud, C.J. Riedel, M. Rodrigues, L. Rondin, A. Roura, W.P. Schleich, J. Schmiedmayer, T. Schuldt, K.C. Schwab, M. Tajmar, G.M. Tino, H. Ulbricht, et al.
    arxiv.org (2015)
  • Teleportation of entanglement over 143 km
    T. Herbst, T. Scheidl, M. Fink, J. Handsteiner, B. Wittmann, R. Ursin, A. Zeilinger
    P. Natl. Acad. Sci. USA 112, 14202-14205 (2015)
  • On the equivalence of Clauser-Horne and Eberhard inequality based tests
    A. Khrennikov, S. Ramelow, R. Ursin, B. Wittmann, J. Kofler, I. Basieva
    Physica Scripta 2104 (2014)
  • Turbulent single-photon propagation in the Canary optical link
    I. Capraro, A. Tomaello, A. Dall'Arche, F. Gerlin, T. Herbst, R. Ursin, G. Vallone, P. Villoresi
    Hannes-Jörg Schmiedmayer and Philip Walther, ed. (2014)
  • Communication with spatially modulated light through turbulent air across Vienna
    M. Krenn, R. Fickler, M. Fink, J. Handsteiner, M. Malik, T. Scheidl, R. Ursin, A. Zeilinger
    New Journal of Physics 16, 113028 (2014)
  • Bell violation with entangled photons, free of the coincidence-time loophole
    J.-Å. Larsson, M. Giustina, J. Kofler, B. Wittmann, R. Ursin, S. Ramelow
    Phys. Rev. A 90, 032107 (2014)
  • Quantum estimation of the Schwarzschild space-time parameters of the Earth
    D.E. Bruschi, A. Datta, R. Ursin, T.C. Ralph, I. Fuentes
    arxiv.org (2014)
  • Efficient heralding of polarization-entangled photons from type-0 and type-II spontaneous parametric downconversion in periodically poled KTiOPO4
    F. Steinlechner, M. Gilaberte, M. Jofre, T. Scheidl, J.P. Torres, V. Pruneri, R. Ursin
    J. Opt. Soc. Am. B, 2068-2076 (2014)
  • Crossed-crystal scheme for femtosecond-pulsed entangled photon generation in periodically poled potassium titanyl phosphate
    T. Scheidl, F. Tiefenbacher, R. Prevedel, F. Steinlechner, R. Ursin, A. Zeilinger
    Phys. Rev. A 89, 042324 (2014)
  • Teleportation of entanglement over 143 km
    T. Herbst, T. Scheidl, M. Fink, J. Handsteiner, B. Wittmann, R. Ursin, A. Zeilinger
    arxiv.org, 1403.0009 (2014)
  • Characterization of a Commercially Available Large Area, High Detection Efficiency Single-Photon Avalanche Diode
    M. Stipcevic, D. Wang, R. Ursin
    Journal of Lightwave Technology 31, 3591--3596 (2013)
  • Quantum information: Sharing quantum secrets
    R. Ursin, R. Hughes
    Nature 501, 37-38 (2013)
  • Bell violation using entangled photons without the fair-sampling assumption
    M. Giustina, A. Mech, S. Ramelow, B. Wittmann, J. Kofler, J. Beyer, A. Lita, B. Calkins, T. Gerrits, S.W. Nam, R. Ursin, A. Zeilinger
    Nature 497, 227-230 (2013)
  • Quantum optics experiments using the International Space Station: a proposal
    T. Scheidl, E. . Wille, R. Ursin
    New Journal of Physics 15, 043008 (2013)
  • Highly efficient heralding of entangled single photons
    S. Ramelow, A. Mech, M. Giustina, S. Groeblacher, W. Wieczorek, A. Lita, B. Calkins, T. Gerrits, S.W. Nam, A. Zeilinger, R. Ursin
    Optics Express 21, 6707-6717 (2013)
  • Quantum erasure with causally disconnected choice
    X.-S. Ma, J. Kofler, A. Qarrya, N. Tetika, T. Scheidl, R. Ursin, S. Ramelow, T. Herbst, L. Ratschbachera, A. Fedrizzia, T. Jennewein, A. Zeilinger
    Proc. Natl. Acad. Sci. 110, 1221-1226 (2013)
  • Active and passive optical sources for QKD
    M. Jofre, F. Steinlechner, G. Anzolin, W. Amaya, J. Capmany, R. Ursin, J.L. Vilas, E. Bernabeu, J.P. Torres, M.W. Mitchell, V. Pruneri
    Proc. of SPIE, 1-1 (2013)
  • Bell violation with entangled photons, free of the fair-sampling assumption
    M. Giustina, A. Mech, S. Ramelow, B. Wittmann, J. Kofler, J. Beyer, A. Lita, B. Calkins, T. Gerrits, S.W. Nam, R. Ursin, A. Zeilinger
    arXiv 1212.0533, 10 (2012)
  • Impact of turbulence in long range quantum and classical communications
    I. Capraro, A. Tomaello, A. Dall'Arche, F. Gerlin, R. Ursin, G. Vallone, P. Villoresi
    Phys. Rev. Lett. 109, 5 (2012)
  • Experimental quantum teleportation over a high-loss free-space channel
    X.-song Ma, S. Kropatschek, W. Naylor, T. Scheidl, J. Kofler, T. Herbst, A. Zeilinger, R. Ursin
    Optics Express 20, 23126 (2012)
  • Quantum teleportation over 143 kilometres using active feed-forward
    X.-S. Ma, T. Herbst, T. Scheidl, D. Wang, S. Kropatschek, W. Naylor, B. Wittmann, A. Mech, J. Kofler, E. Anisimova, V. Makarov, T. Jennewein, R. Ursin, A. Zeilinger
    Nature Physics 489, 269-273 (2012)
  • A non-local quantum eraser
    X.-song Ma, J. Kofler, A. Qarry, N. Tetik, T. Scheidl, R. Ursin, S. Ramelow, T. Herbst, L. Ratschbacher, A. Fedrizzi, T. Jennewein, A. Zeilinger
    arXiv arXiv:1206.6578v1, 13 (2012)
  • Loophole-free Einstein-Podolsky -Rosen experiment via quantum steering
    B. Wittmann, S. Ramelow, F. Steinlechner, N.K. Langford, N. Brunner, H.M. Wiseman, R. Ursin, A. Zeilinger
    New Journal of Physics 14, 10 (2012)
  • Advanced Optical Wireless Communication Systems
    S. Arnon, J. Barry, G. Karagiannidis, R. Schober, M. Uysal, I.B. Djordjevic, J.A. Salehi, B.M. Ghaffari, M.D. Matinfar, M. Kavehrad, S. Hranilovic, A. Lapidoth, S.M. Moser, M. Wigger, H. Ding, B.M. Sadler, G. Chen, Z. Xu, B. Cochenour, L. Mullen, R. Green, M. Leeson, N. Letzepis, A. Guillén i Fàbregas, R. Ursin, N.K. Langford, A. Poppe, W. Rabinovich, K. Tae-Gyu, D.C. O'Brien, S. Sivathasan
    Cambridge University Press(2012)
  • Experimental delayed-choice entanglement swapping
    X.-song Ma, S. Zotter, J. Kofler, R. Ursin, T. Jennewein, Č. Brukner, A. Zeilinger
    Nature Physics 8, 479-484 (2012)
  • A high-brightness source of polarization-entangled photons optimized for applications in free space
    F. Steinlechner, P. Trojek, M. Jofre, H. Weier, D. Perez, T. Jennewein, R. Ursin, J. Rarity, M.W. Mitchell, J.P. Torres, H. Weinfurter, V. Pruneri
    Optics Express 20, 9640-9649 (2012)
  • Field test of quantum key distribution in the Tokyo QKD Network
    M. Sasaki, M. Fujiwara, H. Ishizuka, W. Klaus, K. Wakui, M. Takeoka, S. Miki, T. Yamashita, Z. Wang, A. Tanaka, K. Yoshino, Y. Nambu, S. Takahashi, A. Tajima, A. Tomita, T. Domeki, HasegawaT., Y. Sakai, H. Kobayashi, T. Asai, K. Shimizu, T. Tokura, T. Tsurumaru, M. Matsui, T. Honjo, K. Tamaki, H. Takesue, Y. Tokura, J.F. Dynes, A.R. Dixon, A.W. Sharpe, Z.L. Yuan, A.J. Shields, S. Uchikoga, M. Legré, S. Robyr, P. Trinkler, L. Monat, J.-B. Page, G. Ribordy, A. Poppe, A. Allacher, O. Maurhart, T. Länger, M. Peev, A. Zeilinger
    Optics Express 19, 23 (2011)
  • Fast optical source for quantum key distribution based on semiconductor optical amplifiers
    M. Jofre, A. Gardelein, G. Anzolin, W. Amaya, J. Capmany, R. Ursin, L. Peñate, D. Lopez, J.L. San Juan, J.A. Carrasco, F. Garcia, F.J. Torcal-Milla, L.M. Sanchez-Brea, E. Bernabeu, J.M. Perdigues, T. Jennewein, J.P. Torres, M.W. Mitchell, V. Pruneri
    Optics Express 19, 9 (2011)
  • Violation of local realism with freedom of choice
    T. Scheidl, R. Ursin, J. Kofler, S. Ramelow, X. Ma, T. Herbst, L. Ratschbacher, A. Fedrizzi, N. Langford, T. Jennewein, A. Zeilinger
    PNAS 107, 19709-19713 (2010)
  • Quantum communication via free-space optical links
    R. Ursin
    QCW2010 (2010)
  • Feasibility of 300km quantum key distribution with entangled states
    T. Scheidl, R. Ursin, A. Fedrizzi, S. Ramelow, X. Ma, T. Herbst, R. Prevedel, L. Ratschbacher, J. Kofler, T. Jennewein, A. Zeilinger
    New J. Phys., 085002 (2009)
  • Transmission of Entangled Photons over a High-Loss Free-Space Channel
    A. Fedrizzi, R. Ursin, A. Zeilinger
    www.2Physics.com (2009)
  • Performing high-quality multi-photon experiments with parametric down-conversion
    T. Jennewein, R. Ursin, M. Aspelmeyer, A. Zeilinger
    J. Phys. B: At. Mol. Opt. Phys., 114008 (7pp) (2009)
  • Quantum teleportation and entanglement swapping with linear optics logic gates
    C. Schmid, N. Kiesel, U. Weber, R. Ursin, A. Zeilinger, H. Weinfurter
    New Journal of Physics, 033008 (10pp) (2009)
  • Single photons from a satellite: quantum communication in space
    P. Villoresi, R. Ursin, A. Zeilinger
    SPIE Newsroom (2009)
  • High-fidelity transmission of entanglement over a high-loss free-space channel
    A. Fedrizzi, R. Ursin, T. Herbst, M. Nespoli, R. Prevedel, T. Scheidl, F. Tiefenbacher, T. Jennewein, A. Zeilinger
    Nature Physics (2008)
  • Violation of local realism with freedom of choice
    T. Scheidl, R. Ursin, J. Kofler, S. Ramelow, X. Ma, T. Herbst, A. Fedrizzi, N. Langford, T. Jennewein, A. Zeilinger
    E-print quant-ph (2008)
  • Space-QUEST. Experiments with quantum entanglement in space
    R. Ursin, T. Jennewein, J. Kofler, J.M. Perdigues Armengol, C.J. de Matos, M. Aspelmeyer, A. Valencia, T. Scheidl, A. Acín, C. Barbieri, G. Bianco, S. Cova, D. Giggenbach, W. Leeb, R.H. Hadeld, R. Laflamme, N. Lütkenhaus, G. Milburn, M. Peev, T. Ralph
    2008 IAC Microgravity Sciences and Processes Symposium (2008)
  • Quantum communications at ESA: Towards a space experiment on the ISS
    B. Furch, C.J. de Matos, O. Minster, L. Cacciapuoti, M. Pfennigbauer, M. Aspelmeyer, T. Jennewein, R. Ursin, T. Schmitt-Manderbach, G. Baister, J. Rarity, W. Leeb, C. Barbieri, H. Weinfurter, A. Zeilinger
    Acta Astronautica (2008)
  • Experimental verification of the feasibility of a quantum channel between space and Earth
    P. Villoresi, T. Jennewein, F. Tamburini, M. Aspelmeyer, C. Bonato, R. Ursin, C. Pernechele, V. Luceri, G. Bianco, A. Zeilinger, C. Barbieri
    New Journal of Physics (2008)
  • Quantum communication at ESA: Towards a space experiment on the ISS
    J.M. Perdigues Armengol, B. Furch, C.J. de Matos, O. Minster, L. Cacciapuoti, M. Pfennigbauer, M. Aspelmeyer, T. Jennewein, R. Ursin, T. Schmitt-Manderbach, J. Rarity, W. Leeb, C. Barbieri, H. Weinfurter, A. Zeilinger
    (2007)
  • Applications of quantum communication protocols in real world scenarios towards space
    R. Ursin, F. Tiefenbacher, T. Jennewein, A. Zeilinger
    e & i Elektrotechnik und Informationstechnik (2007)
  • Experimental analysis of a simple linear optics phase gate
    C. Schmid, U. Weber, N. Kiesel, R. Ursin, H. Weinfurter
    International Journal of Quantum Information (2007)
  • Experimental Demonstration of Free-Space Decoy-State Quantum Key Distribution over 144 km
    T. Schmitt-Manderbach, H. Weier, M. Fürst, R. Ursin, F. Tiefenbacher, T. Scheidl, J.M. Perdigues Armengol, Z. Sodnik, C. Kurtsiefer, J. Rarity, A. Zeilinger, H. Weinfurter
    Phys. Rev. Lett. (2007)
  • Entanglement-based quantum communication over 144km
    R. Ursin, F. Tiefenbacher, T. Schmitt-Manderbach, H. Weier, T. Scheidl, M. Lindenthal, B. Blauensteiner, T. Jennewein, J.M. Perdigues Armengol, P. Trojek, B. Ömer, M. Fürst, M. Meyenburg, J. Rarity, Z. Sodnik, C. Barbieri, H. Weinfurter, Zeilinger. A.
    (2007)
  • Free-Space distribution of entanglement and single photons over 144 km
    R. Ursin, F. Tiefenbacher, T. Schmitt-Manderbach, H. Weier, T. Scheidl, M. Lindenthal, B. Blauensteiner, T. Jennewein, J.M. Perdigues Armengol, P. Trojek, B. Ömer, M. Fürst, M. Meyenburg, J. Rarity, Z. Sodnik, C. Barbieri, H. Weinfurter, A. Zeilinger
    (2006)
  • "More Complete" Quantum Teleportation über lange Distanzen
    R. Ursin
    (2006)
  • Linear Optics Controlled-Phase Gate Made Simple
    N. Kiesel, C. Schmid, T. Weber, R. Ursin, H. Weinfurter
    Phys. Rev. Lett. (2005)
  • Distributing entanglement and single photons through an intra-city, free-space quantum channel
    K.J. Resch, M. Lindenthal, B. Blauensteiner, H. Böhm, A. Fedrizzi, C. Kurtsiefer, A. Poppe, T. Schmitt-Manderbach, M. Taraba, R. Ursin, P. Walther, H. Weier, H. Weinfurter, A. Zeilinger
    Optics Express (2005)
  • A Novel Protocol-Authentication Algorithm Ruling Out a Man-in-the Middle Attack in Quantum Cryptography
    M. Nölle, M. Peev, O. Maurhardt, T. Lorünser, M. Suda, A. Poppe, R. Ursin, A. Fedrizzi, A. Zeilinger
    International Journal of Quantum Information (2005)
  • Advanced Quantum Communication Experiments with Entangled Photons
    M. Aspelmeyer, H. Böhm, A. Fedrizzi, S. Gasparoni, T. Jennewein, G. Molina-Terriza, A. Poppe, K.J. Resch, R. Ursin, P. Walther, A. Zeilinger
    In: Quantum Communications and Cryptography, Vol LLC (2005)
  • Tools for long distance quantum communications
    R. Ursin
    (2005)
  • Long-Distance Free-Space Distribution of Quantum Entanglement over Vienna
    R. Ursin
    (2005)
  • Quantum teleportation across the Danube
    R. Ursin
    (2005)
  • Space - QUEST
    R. Ursin
    (2005)
  • Free Space Entanglement Distribution
    R. Ursin
    (2005)
  • Experimental teleportation of quantum entanglement with an optimal linear optics Bell-state analyzer
    T. Jennewein, R. Ursin, M. Aspelmeyer, A. Zeilinger
    (2004)
  • Quantum teleportation across the Danube
    R. Ursin, T. Jennewein, M. Aspelmeyer, R. Kaltenbaek, M. Lindenthal, P. Walther, A. Zeilinger
    Nature (2004)
  • De Broglie Wavelength of a Nonlocal Four-Photon state
    P. Walther, J. Pan, M. Aspelmeyer, R. Ursin, S. Gasparoni, A. Zeilinger
    Nature (2004)
  • Practical Quantum Key Distribution with Polarization Entangled Photons
    A. Poppe, A. Fedrizzi, T. Lorünser, O. Maurhardt, R. Ursin, H. Böhm, M. Peev, M. Suda, C. Kurtsiefer, H. Weinfurter, T. Jennewein, A. Zeilinger
    (2004)
  • Space-to-ground Quantum-communication Using An Optical Ground Station
    P. Villoresi, F. Tamburini, M. Aspelmeyer, R. Ursin, C. Pachello, G. Bianco, C. Barbieri, T. Jennewein, A. Zeilinger
    Proceedings of SPIEQuantum Communications and Quantum Imaging II (2004)
  • Experimental Quantum Coin Tossing
    G. Molina-Terriza, A. Vaziri, R. Ursin, A. Zeilinger
    Phys. Rev. Lett. (2004)
  • Demonstration of optimal linear-optics quantum teleportation
    T. Jennewein, R. Ursin, M. Aspelmeyer, A. Zeilinger
    (2004)
  • Long-Distance Free-Space Distribution of Quantum Entanglement
    M. Aspelmeyer, H. Böhm, T. Gyatso, T. Jennewein, R. Kaltenbaek, M. Lindenthal, G. Molina-Terriza, A. Poppe, K.J. Resch, M. Taraba, R. Ursin, P. Walther, A. Zeilinger
    Science (2003)
  • Quantum Communications in Space
    M. Aspelmeyer, T. Jennewein, H.R. Böhm, Č. Brukner, R. Kaltenbaek, M. Lindenthal, G. Molina-Terriza, J. Petschinka, R. Ursin, P. Walther, A. Zeilinger, M. Pfennigbauer, W. Leeb
    (2003)
  • Experimental entanglement purification of arbitrary unknown states
    J. Pan, S. Gasparoni, R. Ursin, G. Weihs, A. Zeilinger
    (2003)