Univ.-Prof. Dipl.-Ing. Dr. Philip Walther
T: +43-1-4277-72560
M: +43-664-60277-72560
Winter term 2018
260165 PR Spezialisierungsmodul Quantenoptik, Quantenphysik und Quanteninformation - Einführung in die Arbeitsmethoden der experimentellen und theoretischen Quantenphysik - Vorbereitung zur Masterarbeit
442615 SE Quantum Optics Seminar - The Seminar consists of a series of talks, given by mainly international guests.
Summer term 2018
260122 VO Complex Quantum Systems Summerschool - Lectures by international guests with exams by Philip Walther
260165 PR Spezialisierungsmodul Quantenoptik, Quantenphysik und Quanteninformation - Einführung in die Arbeitsmethoden der experimentellen und theoretischen Quantenphysik - Vorbereitung zur Masterarbeit
442615 SE Quantum Optics Seminar - The Seminar consists of a series of talks, given by mainly international guests.
Winter term 2017
260165 PR Spezialisierungsmodul Quantenoptik, Quantenphysik und Quanteninformation - Einführung in die Arbeitsmethoden der experimentellen und theoretischen Quantenphysik - Vorbereitung zur Masterarbeit


Heilmann, R, Greganti, C, Graefe, M, Nolte, S, Walther, P & Szameit, A 2018, 'Tapering of femtosecond laser-written waveguides' Applied Optics, vol 57, no. 3, pp. 377-381. DOI: 10.1364/AO.57.000377




Procopio, LM, Rozema, LA, Wong, ZJ, Hamel, DR, O'Brien, K, Zhang, X, Dakic, B & Walther, P 2017, 'Single-photon test of hyper-complex quantum theories using a metamaterial' Nature Communications, vol 8, 15044. DOI: 10.1038/ncomms15044



Laudenbach, F, Kalista, S, Hentschel, M, Walther, P & Huebel, H 2017, A Novel Compact and Efficient Source of Photonic Entanglement. in 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 25/06/17. DOI: 10.1109/CLEOE-EQEC.2017.8087345

Rozema, LA, Rubino, G, Feix, A, Araujo, M, Brukner, C & Walther, P 2017, Experimental Tests of Indefinite Causal Orders. in Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC, 2017 Conference on). Conference on Lasers and Electro-Optics, IEEE, Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 25/06/17. DOI: 10.1109/CLEOE-EQEC.2017.8087315


Schleich, WP, Ranade, KS, Anton, C, Arndt, M, Aspelmeyer, M, Bayer, M, Berg, G, Calarco, T, Fuchs, H, Giacobino, E, Grassl, M, Hänggi, P, Heckl, WM, Hertel, I-V, Huelga, S, Jelezko, F, Keimer, B, Kotthaus, JP, Leuchs, G, Luetkenhaus, N, Maurer, U, Pfau, T, Plenio, MB, Rasel, EM, Renn, O, Silberhorn, C, Schiedmayer, J, Schmitt-Landsiedel, D, Schönhammer, K, Ustinov, A, Walther, P, Weinfurter, H, Welzl, E, Wiesendanger, R, Wolf, S, Zeilinger, A & Zoller, P 2016, 'Quantum technology: from research to application' Applied Physics B: lasers and optics, vol 122, no. 5, 130. DOI: 10.1007/s00340-016-6353-8

Laudenbach, F, Huebel, H, Hentschel, M, Walther, P & Poppe, A 2016, 'Modelling parametric down-conversion yielding spectrally pure photon pairs' Optics Express, vol 24, no. 3, pp. 2712-2727. DOI: 10.1364/OE.24.002712

Procopio, LM, Rozema, LA, Wong, ZJ, Hamel, DR, O'Brien, K, Zhang, X, Dakic, B & Walther, P, Experimental Test of Hyper-Complex Quantum Theories, 2016, Web publication, arXiv.org.


Trupke, M, Salter, C, Reisenbauer, S, Vasconcelos, R, Wachter, G, Buczak, K, Angerer, A, Schmiedmayer, J, Aumayr, F, Schmid, U, Walther, P, Munro, WJ & Nemoto, K 2016, Large-scale quantum technology based on luminescent centers in crystals. in 2016 IEEE International Electron Devices Meeting (IEDM) (IEDM). IEEE International Electron Devices Meeting, IEEE, pp. 13.7.1 - 13.7.4, 62nd Annual IEEE International Electron Devices Meeting (IEDM), San Francisco, United States, 3/12/16. DOI: 10.1109/IEDM.2016.7838412

Tillmann, M, Tan, S-H, Stoeckl, SE, Sanders, BC, de Guise, H, Heilmann, R, Nolte, S, Szameit, A & Walther, P 2015, 'Generalized Multiphoton Quantum Interference' Physical Review X, vol 5, no. 4, 041015. DOI: 10.1103/PhysRevX.5.041015







Ma, X, Dakic, B & Walther, P 2014, Photonic Toolbox for Quantum Simulation. in S Kais (ed.), Quantum Information and Computation for Chemistry. Advances in Chemical Physics, vol. 154, John Wiley & Sons, Inc., Hoboken, pp. 229-240. DOI: 10.1002/9781118742631.ch09

Walther, P & Schmiedmayer, J 2014, Preface: Quantum Communication, Measurement and Computing. AIP Conference Proceedings, vol. 1633, AIP Press. DOI: 10.1063/1.3630136

Barz, S, Fitzsimons, JF, Kashefi, E & Walther, P 2013, 'Experimental verification of quantum computation' Nature Physics, vol 9, no. 11, pp. 727-731. DOI: 10.1038/NPHYS2763

Tillmann, M, Dakic, B, Heilmann, R, Nolte, S, Szameit, A & Walther, P 2013, 'Experimental boson sampling' Nature Photonics, vol 7, no. 7, pp. 540-544. DOI: 10.1038/NPHOTON.2013.102


Walther, P 2013, Entanglement as an Element-of-Reality. in T Sauer & A Wüthrich (eds), New Vistas on Old Problems: Recent Approaches to the Foundations of Quantum Mechanics. Max Planck Research Library for the History and Development of Knowledge / Proceedings, vol. 3, Edition Open Access, Berlin, pp. 163-176.

Dakic, B, Lipp, YO, Ma, X, Ringbauer, M, Kropatschek, S, Barz, S, Paterek, T, Vedral, V, Zeilinger, A, Brukner, C & Walther, P 2012, 'Quantum discord as resource for remote state preparation' Nature Physics, vol 8, no. 9, pp. 666-670. DOI: 10.1038/NPHYS2377

Aspuru-Guzik, A & Walther, P 2012, 'Photonic quantum simulators' Nature Physics, vol 8, no. 4, pp. 285-291. DOI: 10.1038/NPHYS2253

Barz, S, Kashefi, E, Broadbent, A, Fitzsimons, J, Zeilinger, A & Walther, P 2012, 'Demonstration of Blind Quantum Computing' Science, vol 335, no. 6066, pp. 303-308. DOI: 10.1126/science.1214707

Barz, S, Cronenberg, G & Walther, P 2012, Experimental Engineering of Photonic Quantum Entanglement. in M Fadhali (ed.), Advanced Photonic Sciences. InTech, pp. 41-52. DOI: 10.5772/26366


Walther, P 2012, Nur die Neugier zählt! Wie sonst käme ein Chemiker zur Quantenphysik? in M Klatt & S Koller (eds), Lehre als Abenteuer: Anregungen für eine bessere Hochschulausbildung . Campus, pp. 160-162.



Barz, S, Ma, X, Dakic, B, Zeilinger, A & Walther, P 2011, Experimental photonic state engineering and quantum control of two optical qubits. in T Ralph & PK Lam (eds), Quantum Communication, Measurement and Computing (QCMC): The Tenth International Conference. vol. 1363, AIP Conference Proceedings, vol. 1363, AIP Press, Woodbury, NY, pp. 13-16, 10th International Conference on Quantum Communication, Measurement and Computing (QCMC), Brisbane, Australia, 19/07/10. DOI: 10.1063/1.3630138



Walther, P 2011, Wie wirklich ist die Wirklichkeit? in B Kanitscheider & R Neck (eds), Das naturwissenschaftliche Weltbild am Beginn des 21. Jahrhunderts. Schriftenreihe der Karl Popper Foundation, Peter Lang, pp. 123-128. DOI: 10.3726/978-3-653-02207-0




Walther, P, Puchberger, M, Kogler, FR, Schwarz, K & Schubert, U 2009, 'Ligand dynamics on the surface of zirconium oxo clusters' Physical Chemistry Chemical Physics - PCCP, vol 11, no. 19, pp. 3640-3647. DOI: 10.1039/b820731c

Walther, P, Nemiroski, A, Gorshkov, AV, Zibrov, AS & Lukin, DM, Quantum memory for long-distance and multiphoton entanglement, 2008, Web publication, SPIE-INT SOC OPTICAL ENGINEERING. DOI: 10.1117/2.1200803.1072


Prevedel, R, Walther, P, Tiefenbacher, F, Böhi, P, Kaltenbaek, R, Jennewein, T & Zeilinger, A 2007, 'High-speed linear optics quantum computing using active feed-forward' Nature, vol 445, no. 7123, pp. 65-69. DOI: 10.1038/nature05346



Walther, P, Eisaman, MD, Nemiroski, A, Gorshkov, AV, Zibrov, AS, Zeilinger, A & Lukin, MD 2007, Multi-photon entanglement: From quantum curiosity to quantum computing and quantum repeaters. in C Roychoudhuri, AF Kracklauer & K Creath (eds), NATURE OF LIGHT: WHAT ARE PHOTONS?., 66640G, Proceedings of SPIE, vol. 6664, SPIE-INT SOC OPTICAL ENGINEERING, BELLINGHAM, Conference on Nature of Light - What are Photons, San Diego, United States, 26/08/07. DOI: 10.1117/12.736979



Walther, P & Zeilinger, A 2006, Quantum Entanglement, Purification, and linear-optics quantum gates with photonic qubits. in L Accardi, M Ohya & N Watanabe (eds), Quantum Information and Computing. vol. 19, QP-PQ Quantum Probability and White Noise Analysis, vol. 19, World Scientific Publishing, pp. 360-369. DOI: 10.1142/9789812774491_0030


Arndt, M, Aspelmeyer, M, Bernstein, HJ, Bertlmann, R, Brukner, C, Dowling, JP, Eisert, J, Ekert, A, Fuchs, CA, Greenberger, DM, Horne, MA, Jennewein, T, Kwiat, PG, Mermin, ND, Pan, J-W, Rasel, EM, Rauch, H, Rudolph, TG, Salomon, C, Sergienko, AV, Schmiedmayer, J, Simon, C, Vedral, V, Walther, P, Weihs, G, Zoller, P & Zukowski, M, Quantum Physics from A to Z, 2005, Web publication.



Walther, P, Resch, K, Rudolph, T, Schenck, E, Weinfurter, H, Vedral, V, Aspelmeyer, M & Zeilinger, A 2005, 'Experimental one-way quantum computing' Nature, vol 434, no. 7030, pp. 169-176. DOI: 10.1038/nature03347



Resch, K, Lindenthal, M, Blauensteiner, B, Böhm, H, Fedrizzi, A, Kurtsiefer, C, Poppe, A, Schmitt-Manderbach, T, Taraba, M, Ursin, R, Walther, P, Weier, H, Weinfurter, H & Zeilinger, A 2005, 'Distributing entanglement and single photons through an intra-city, free-space quantum channel' Optics Express, vol 13, no. 1, pp. 202-209. DOI: 10.1364/OPEX.13.000202

Aspelmeyer, M, Böhm, H, Fedrizzi, A, Gasparoni, S, Lindenthal, M, Molina-Terriza, G, Poppe, A, Resch, K, Ursin, R, Walther, P, Zeilinger, A & Jennewein, T 2005, Advanced Quantum Communications Experiments with Entangled Photons. in AV Sergienko (ed.), Quantum Communications and Cryptography. CRC Press Taylor & Francis Group, pp. 45-81. DOI: 10.1201/9781420026603.ch3

Resch, KJ, Lindenthal, M, Blauensteiner, B, Böhm, H, Fedrizzi, A, Taraba, M, Ursin, R, Walther, P, Poppe, A, Schmitt-Manderbach, T, Weier, H, Weinfurter, H & Zeilinger, A 2005, Distributing entanglement and single photons through an intra-city, free-space quantum channel. in 2005 European Quantum Electronics Conference, EQEC '05. vol. 2005, 1567464, pp. 298, 2005 European Quantum Electronics Conference, EQEC '05, Munich, Germany, 12/06/05. DOI: 10.1109/EQEC.2005.1567464


Walther, P & Zeilinger, A 2005, Quantum logics based on four-photon entanglement. in VM Akulin, A Sarfati, G Kurizki & S Pellegrin (eds), Decoherence, Entanglement and Information Protection in Complex Quantum Systems. NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY, vol. 189, Springer, DORDRECHT, pp. 49-62, NATO Advanced Research Workshop on Decoherence, Entanglement and Information Protection in Complex Quantum Systems, Les Houches, France, 26/04/04. DOI: 10.1007/1-4020-3283-8_7

Ursin, R, Jennewein, T, Aspelmeyer, M, Kaltenbaek, R, Lindenthal, M, Walther, P & Zeilinger, A 2004, 'Quantum teleportation across the Danube' Nature, vol 430, no. 7002, pp. 849-849. DOI: 10.1038/430849a

Aspelmeyer, M, Walther, P, Jennewein, T & Zeilinger, A 2004, Nonlocal photon number states for quantum metrology. in RE Meyers & Y Shih (eds), Quantum Communications and Quantum Imaging II. Progress in Biomedical Optics and Imaging - SPIE, vol. 5551, International Society for Optical Engineering (SPIE), Denver, CO, pp. 15-22, Conference on Quantum Communications and Quantum Imaging II, Denver, United States, 4/08/04. DOI: 10.1117/12.561460


Walther, P, Pan, J-W, Aspelmeyer, M, Ursin, R, Gasparoni, S & Zeilinger, A 2004, 'De Broglie wavelength of a non-local four-photon state' Nature, vol 429, no. 6988, pp. 158-161. DOI: 10.1038/nature02552

Aspelmeyer, M, Böhm, H, Gyatso, T, Jennewein, T, Kaltenbaek, R, Lindenthal, M, Molina, G, Poppe, A, Resch, K, Taraba, M, Ursin, R, Walther, P & Zeilinger, A 2003, 'Long-distance free-space distribution of quantum entanglement' Science, vol 301, no. 5633, pp. 621-623. DOI: 10.1126/science.1085593

Aspelmeyer, M, Jennewein, T, Böhm, HR, Brukner, C, Kaltenbaek, R, Lindenthal, M, Molina-Terriza, G, Petschinka, J, Ursin, R, Walther, P, Zeilinger, A, Pfennigbauer, M & Leeb, WR 2003, Quantum Communications in Space. in Technical Report under contract 16358/02, ESA. ESA Publications Division.


Quantentechnologie für Datensicherheit

Walther, P. (Speaker)
12 Jun 2018

Activity: Science to PublicTalk or oral contribution


Quantum Photonics for Foundations and Applications

Walther, P. (Speaker)
2 Mar 20189 Mar 2018

Activity: Science to ScienceTalk or oral contribution


Quantum Photonics for Quantum Causality

Walther, P. (Speaker)
26 Feb 20182 Mar 2018

Activity: Science to ScienceTalk or oral contribution


Quantum Photonics for Quantum Causality

Walther, P. (Invited speaker)
3 Jan 201811 Jan 2018

Activity: Science to ScienceTalk or oral contribution


Quantum photonics: Schrödinger’s cat applied to causal structures

Walther, P. (Invited speaker)
29 Nov 201730 Nov 2017

Activity: Science to PublicTalk or oral contribution


Quantum computing and quantum physics foundations exploiting photonic quantum technology

Walther, P. (Invited speaker)
28 Sep 201730 Sep 2017

Activity: Science to ScienceTalk or oral contribution


Photonic quantum computing exploiting the superposition of gates and other features

Walther, P. (Invited speaker)
26 Sep 201728 Sep 2017

Activity: Science to ScienceTalk or oral contribution


Quantum photonics for novel quantum computing and testing quantum physics foundations

Walther, P. (Invited speaker)
12 Sep 201714 Sep 2017

Activity: Science to ScienceTalk or oral contribution


Advantages of photonic quantum technology for novel quantum computing schemes

Walther, P. (Invited speaker)
29 Aug 2017

Activity: Science to ScienceTalk or oral contribution


Quantum photonics for superimposing causal orders

Walther, P. (Invited speaker)
3 Aug 2017

Activity: Science to ScienceTalk or oral contribution


Quantum photonics for novel quantum computing and testing quantum physics foundations

Walther, P. (Invited speaker)
24 Jul 201727 Jul 2017

Activity: Science to ScienceTalk or oral contribution


Quantum photonics for novel quantum computing and testing quantum physics foundations

Walther, P. (Invited speaker)
5 Jun 20178 Jun 2017

Activity: Science to ScienceTalk or oral contribution


Experimental superposition of causal orders and investigation of hyper-complex quantum theories

Walther, P. (Invited speaker)
4 Jun 2017

Activity: Science to ScienceTalk or oral contribution


Experimental superposition of causal orders and investigation of hyper-complex quantum theories

Walther, P. (Invited speaker)
25 May 201727 May 2017

Activity: Science to ScienceTalk or oral contribution


Experimental superposition of causal orders and investigation of hyper-complex quantum theories

Walther, P. (Invited speaker)
5 May 2017

Activity: Science to ScienceTalk or oral contribution


Integrated photonics

Walther, P. (Invited speaker)
2 Apr 20178 Apr 2017

Activity: Science to ScienceTalk or oral contribution


Photonic Quantum Technology; Advantages of Photonic Quantum Computing; Photonic Quantum Simulation

Walther, P. (Invited speaker)
25 Mar 201729 Mar 2017

Activity: Science to ScienceTalk or oral contribution


Basic to advanced quantum computing protocols using photonic waveguide circuits

Walther, P. (Invited speaker)
7 Feb 201710 Feb 2017

Activity: Science to ScienceTalk or oral contribution


Optische Quantencomputer - Quantentechnologie aus dem Labor in Richtung breite Anwendung

Walther, P. (Invited speaker)
17 Nov 201618 Nov 2016

Activity: OtherTalk or oral contribution


Quantum photonics for novel quantum computing and testing quantum foundations

Walther, P. (Invited speaker)
14 Nov 2016

Activity: OtherTalk or oral contribution


Quantenoptik, Quantennanophysik und Quanteninformation

Gruppensprecher

Boltzmanngasse 5
1090 Wien
Room: 3430

T: +43-1-4277-72560
M: +43-664-60277-72560
F: +43-1-4277-872560

philip.walther@univie.ac.at