Danner, A., Geerits, N., Lemmel, H., Wagner, R., Sponar, S., & Hasegawa, Y. (2024). Three-path quantum Cheshire cat observed in neutron interferometry. Communications Physics, 7, Article 14. https://doi.org/10.1038/s42005-023-01494-5 ( reposiTUm)

Fischer, H., Käding, C., Lemmel, H., Sponar, S., & Pitschmann, M. (2024). Search for Dark Energy with Neutron Interferometry. Progress of Theoretical and Experimental Physics, 2024(2), Article 023E02. https://doi.org/10.1093/ptep/ptae014 ( reposiTUm)

Kreuzgruber, E., Wagner, R., Geerits, N., Lemmel, H., & Sponar, S. (2024). Violation of a Leggett-Garg Inequality Using Ideal Negative Measurements in Neutron Interferometry. Physical Review Letters, 132(26), 1–6. https://doi.org/10.1103/PhysRevLett.132.260201 ( reposiTUm)

Geerits, N., Lemmel, H., Berger, A.-S., & Sponar, S. (2023). Phase vortex lattices in neutron interferometry. Communications Physics, 6(1), Article 209. https://doi.org/10.1038/s42005-023-01318-6 ( reposiTUm)

Wagner, R., Kersten, W., Lemmel, H., Sponar, S., & Hasegawa, Y. (2023). Quantum causality emerging in a delayed-choice quantum Cheshire Cat experiment with neutrons. Scientific Reports, 13(1), Article 3865. https://doi.org/10.1038/s41598-023-29970-6 ( reposiTUm)

Danner, A., Lemmel, H., Wagner, R., Sponar, S., & Hasegawa, Y. (2023). Neutron Interferometer Experiments Studying Fundamental Features of Quantum Mechanics. Atoms, 11(6), Article 98. https://doi.org/10.3390/atoms11060098 ( reposiTUm)

Lemmel, H., Geerits, N., Danner, A., Hofmann, H. F., & Sponar, S. (2022). Quantifying the presence of a neutron in the paths of an interferometer. Physical Review Research (PRResearch), 4(2), Article 023075. https://doi.org/10.1103/PhysRevResearch.4.023075 ( reposiTUm)

Geerits, N., & Sponar, S. (2021). Twisting neutral particles with electric fields. Physical Review A, 103(022205). https://doi.org/10.1103/physreva.103.022205 ( reposiTUm)

Sponar, S., Sedmik, R. I. P., Pitschmann, M., Abele, H., & Hasegawa, Y. (2021). Tests of fundamental quantum mechanics and dark interactions with low-energy neutrons. Nature Reviews Physics, 3(5), 309–327. https://doi.org/10.1038/s42254-021-00298-2 ( reposiTUm)

Wagner, R., Kersten, W., Danner, A., Lemmel, H., Pan, A. K., & Sponar, S. (2021). Direct experimental test of commutation relation via imaginary weak value. Physical Review Research, 3(023243). https://doi.org/10.1103/physrevresearch.3.023243 ( reposiTUm)

Sponar, S., Danner, A., Ozawa, M., & Hasegawa, Y. (2021). Neutron optical test of completeness of quantum root-mean-square errors. Npj Quantum Information, 7(106). https://doi.org/10.1038/s41534-021-00437-8 ( reposiTUm)

Sponar, S., Danner, A., Pecile, V., Einsidler, N., Demirel, B., & Hasegawa, Y. (2021). Experimental test of entropic noise-disturbance uncertainty relations for three-outcome qubit measurements. Physical Review Research, 3(023175). https://doi.org/10.1103/physrevresearch.3.023175 ( reposiTUm)

Demirel, B., Sponar, S., & Hasegawa, Y. (2020). Measurements of Entropic Uncertainty Relations in Neutron Optics. Applied Sciences, 10(3), 1087. https://doi.org/10.3390/app10031087 ( reposiTUm)

Danner, A., Demirel, B., Kersten, W., Lemmel, H., Wagner, R., Sponar, S., & Hasegawa, Y. (2020). Spin-rotation coupling observed in neutron interferometry. Npj Quantum Information, 6(23). https://doi.org/10.1038/s41534-020-0254-8 ( reposiTUm)

Sponar, S., Danner, A., Obigane, K., Hack, S., & Hasegawa, Y. (2020). Experimental test of tight state-independent preparation uncertainty relations for qubits. Physical Review A, 102(042204). https://doi.org/10.1103/physreva.102.042204 ( reposiTUm)

Demirel, B., Sponar, S., Abbott, A. A., Branciard, C., & Hasegawa, Y. (2019). Experimental test of an entropic measurement uncertainty relation for arbitrary qubit observables. New Journal of Physics, 21(1), 013038. https://doi.org/10.1088/1367-2630/aafeeb ( reposiTUm)

Blaickner, M., Demirel, B., Drevenšek-Olenik, I., Fally, M., Flauger, P., Geltenbort, P., Hasegawa, Y., Kurinjimala, R., Ličen, M., Pruner, C., Sponar, S., Tomita, Y., & Klepp, J. (2019). Monte-Carlo simulation of neutron transmission through nanocomposite materials for neutron-optics applications. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 916, 154–157. https://doi.org/10.1016/j.nima.2018.11.074 ( reposiTUm)

Kersten, W., Brandl, L., Wagner, R., Huber, C., Bruckner, F., Hasegawa, Y., Suess, D., & Sponar, S. (2019). Additive-Manufactured and Topology-Optimized Permanent-Magnet Spin Rotator for Neutron Interferometry. Physical Review Applied, 12(014023). https://doi.org/10.1103/physrevapplied.12.014023 ( reposiTUm)

Danner, A., Demirel, B., Sponar, S., & Hasegawa, Y. (2019). Development and perfomance of a miniaturised spin rotator suitable for neutron interferometer experiments. Journal of Physics Communications, 3(3), Article 035001. https://doi.org/10.1088/2399-6528/ab0805 ( reposiTUm)

Geppert-Kleinrath, H., Denkmayr, T., Sponar, S., Lemmel, H., Jenke, T., & Hasegawa, Y. (2018). Multifold paths of neutrons in the three-beam interferometer detected by a tiny energy kick. Physical Review A, 97(052111). https://doi.org/10.1103/physreva.97.052111 ( reposiTUm)

Denkmayr, T., Dressel, J., Geppert-Kleinrath, H., Hasegawa, Y., & Sponar, S. (2018). Weak values from strong interactions in neutron interferometry. Physica B: Condensed Matter, 551, 339–346. https://doi.org/10.1016/j.physb.2018.04.014 ( reposiTUm)

Denkmayr, T., Geppert, H., Lemmel, H., Waegell, M., Dressel, J., Hasegawa, Y., & Sponar, S. (2017). Experimental Demonstration of Direct Path State Characterization by Strongly Measuring Weak Values in a Matter-Wave Interferometer. Physical Review Letters, 118(010402). https://doi.org/10.1103/physrevlett.118.010402 ( reposiTUm)

Sulyok, G., & Sponar, S. (2017). Heisenberg’s error-disturbance uncertainty relation: Experimental study of competing approaches. Physical Review A, 96(022137). https://doi.org/10.1103/physreva.96.022137 ( reposiTUm)

Waegell, M., Denkmayr, T., Geppert, H., Ebner, D., Jenke, T., Hasegawa, Y., Sponar, S., Dressel, J., & Tollaksen, J. (2017). Confined contextuality in neutron interferometry: Observing the quantum pigeonhole effect. Physical Review A, 96(052131). https://doi.org/10.1103/physreva.96.052131 ( reposiTUm)

Sponar, S., Denkmayr, T., Geppert, H., & Hasegawa, Y. (2016). Fundamental Features of Quantum Dynamics studied in Matter-Wave Interferometry - Spin Weak Values and the Quantum Cheshire-Cat. Atoms, 4(1), 11. https://doi.org/10.3390/atoms4010011 ( reposiTUm)

Sponar, S. (2016). Error-disturbance uncertainty relations in neutron spin measurements. International Journal of Quantum Information, 14(04), 1640016. https://doi.org/10.1142/s0219749916400165 ( reposiTUm)

Demirel, B., Sponar, S., Sulyok, G., Ozawa, M., & Hasegawa, Y. (2016). Experimental Test of Residual Error-Disturbance Uncertainty Relations for Mixed Spin-½ States. Physical Review Letters, 117(140402). https://doi.org/10.1103/physrevlett.117.140402 ( reposiTUm)

Sulyok, G., Sponar, S., Demirel, B., Buscemi, F., Hall, M. J. W., Ozawa, M., & Hasegawa, Y. (2015). Experimental Test of Entropic Noise-Disturbance Uncertainty Relations for Spin-1/2 Measurements. Physical Review Letters, 115(030401). https://doi.org/10.1103/physrevlett.115.030401 ( reposiTUm)

Sponar, S., Denkmayr, T., Geppert, H., Lemmel, H., Matzkin, A., Tollaksen, J., & Hasegawa, Y. (2015). Weak values obtained in matter-wave interferometry. Physical Review A, 92(062121). https://doi.org/10.1103/physreva.92.062121 ( reposiTUm)

Demirel, B., Sponar, S., & Hasegawa, Y. (2015). Measurement of the spin-rotation coupling in neutron polarimetry. New Journal of Physics, 17(2), 023065. https://doi.org/10.1088/1367-2630/17/2/023065 ( reposiTUm)

Sponar, S., Klepp, J., Schmitzer, C., Bartosik, H., Durstberger-Rennhofer, K., Badurek, G., & Hasegawa, Y. (2014). Tests of alternative quantum theories with neutrons. AIP Conference Proceedings. https://doi.org/10.1063/1.4903089 ( reposiTUm)

Sponar, S., Sulyok, G., Erhart, J., & Hasegawa, Y. (2014). Error-disturbance uncertainty relations in neutron-spin measurements. Advances in High Energy Physics, 2014, 1–6. https://doi.org/10.1155/2014/735398 ( reposiTUm)

Geppert, H., Denkmayr, T., Sponar, S., Lemmel, H., & Hasegawa, Y. (2014). Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 763, 417–423. https://doi.org/10.1016/j.nima.2014.06.080 ( reposiTUm)

Klepp, J., Sponar, S., & Hasegawa, Y. (2014). Fundamental phenomena of quantum mechanics explored with neutron interferometers. Progress of Theoretical and Experimental Physics, 2014(8). https://doi.org/10.1093/ptep/ptu085 ( reposiTUm)

Denkmayr, T., Geppert, H., Sponar, S., Lemmel, H., Matzkin, A., Tollaksen, J., & Hasegawa, Y. (2014). Observation of a quantum Cheshire Cat in a matter-wave interferometer experiment. Nature Communications, 5(4492). https://doi.org/10.1038/ncomms5492 ( reposiTUm)

Sulyok, G., Sponar, S., Erhart, J., Badurek, G., Ozawa, M., & Hasegawa, Y. (2013). Violation of Heisenberg’s error-disturbance uncertainty relation in neutron-spin measurements. Physical Review A, 88(022110). https://doi.org/10.1103/physreva.88.022110 ( reposiTUm)

Sponar, S., Klepp, J., Durstberger-Rennhofer, K., Schmitzer, C., Bartosik, H., Geppert, H., Both, M., Badurek, G., & Hasegawa, Y. (2012). High-efficiency manipulations of triply entangled states in neutron polarimetry. New Journal of Physics, 14(5), 053032. https://doi.org/10.1088/1367-2630/14/5/053032 ( reposiTUm)

Hasegawa, Y., Schmitzer, C., Bartosik, H., Klepp, J., Sponar, S., Durstberger-Rennhofer, K., & Badurek, G. (2012). Falsification of Leggett’s model using neutron matter waves. New Journal of Physics, 14(2), 023039. https://doi.org/10.1088/1367-2630/14/2/023039 ( reposiTUm)

Erhart, J., Sponar, S., Sulyok, G., Badurek, G., Ozawa, M., & Hasegawa, Y. (2012). Experimental demonstration of a universally valid error-disturbance uncertainty relation in spin measurements. Nature Physics, 8(3), 185–189. https://doi.org/10.1038/nphys2194 ( reposiTUm)

Sponar, S., Klepp, J., Zeiner, C., Badurek, G., & Hasegawa, Y. (2010). Violation of a Bell-like inequality for spin-energy entanglement in neutron polarimetry. Physics Letters A, 374(3), 431–434. https://doi.org/10.1016/j.physleta.2009.11.017 ( reposiTUm)

Sponar, S., Klepp, J., Durstberger-Rennhofer, K., Loidl, R., Filipp, S., Lettner, M., Bertlmann, R. A., Badurek, G., Rauch, H., & Hasegawa, Y. (2010). New aspects of geometric phases in experiments with polarized neutrons. Journal of Physics A: Mathematical and Theoretical, 43(35), 354015. https://doi.org/10.1088/1751-8113/43/35/354015 ( reposiTUm)

Hasegawa, Y., Durstberger-Rennhofer, K., Sponar, S., & Rauch, H. (2010). Kochen-Specker theorem studied with neutron interferometer. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 234, 521–524. http://hdl.handle.net/20.500.12708/167805 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Filipp, S., Durstberger-Rennhofer, K., Bertlmann, R. A., Badurek, G., Rauch, H., & Hasegawa, Y. (2010). Geometric phase in entangled systems: A single-neutron interferometer experiment. Physical Review A, 81(042113). https://doi.org/10.1103/physreva.81.042113 ( reposiTUm)

Hasegawa, Y., Loidl, R., Badurek, G., Durstberger-Rennhofer, K., Sponar, S., & Rauch, H. (2010). Engineering of triply entangled states in a single-neutron system. Physical Review A, 81(032121). https://doi.org/10.1103/physreva.81.032121 ( reposiTUm)

Hasegawa, Y., Badurek, G., Filipp, S., Klepp, J., Loidl, R., Sponar, S., & Rauch, H. (2009). Entanglement between degrees of freedom of single-neutrons. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 611(2–3), 310–313. https://doi.org/10.1016/j.nima.2009.07.060 ( reposiTUm)

Bartosik, H., Klepp, J., Schmitzer, C., Sponar, S., Cabello, A., Rauch, H., & Hasegawa, Y. (2009). Experimental test of quantum contextuality in neutron interferometry. Physical Review Letters, 103(040403). https://doi.org/10.1103/physrevlett.103.040403 ( reposiTUm)

Sponar, S., Klepp, J., Badurek, G., & Hasegawa, Y. (2008). Zero-field and Larmor spinor precessions in a neutron polarimeter experiment. Physics Letters A, 372(18), 3153–3156. https://doi.org/10.1016/j.physleta.2008.01.070 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Filipp, S., Badurek, G., Hasegawa, Y., & Rauch, H. (2008). Coherent energy manipulation in single-neutron interferometry. Physical Review A, 78(061604). https://doi.org/10.1103/physreva.78.061604 ( reposiTUm)

Klepp, J., Sponar, S., Filipp, S., Lettner, M., Badurek, G., & Hasegawa, Y. (2008). Observation of Nonadditive Mixed-State Phases with Polarized Neutrons. Physical Review Letters, 101(150404). https://doi.org/10.1103/physrevlett.101.150404 ( reposiTUm)

Sponar, S., Klepp, J., Hasegawa, Y., Jericha, E., & Badurek, G. (2006). Non-Cyclic Geometric Phases in Mixed State Neutron Polarimetry. Acta Phys. Hung. B, 26(1–2), 165–171. http://hdl.handle.net/20.500.12708/172785 ( reposiTUm)

Klepp, J., Sponar, S., Hasegawa, Y., Jericha, E., & Badurek, G. (2005). Noncyclic Pancharatnam phase for mixed state SU(2) evolution in neutron polarimetry. Physics Letters A, 342, 48–52. http://hdl.handle.net/20.500.12708/172331 ( reposiTUm)

Wagner, R., Brandl, L., Kersten, W., Sponar, S., Hasegawa, Y., Huber, C., Bruckner, F., & Suess, D. (2019). 3D printed magnets for neutron spin manipulation. In International Workshop on Particle Physics at Neutron Sources (PPNS 2018) (Vol. 219). https://doi.org/10.1051/epjconf/201921910008 ( reposiTUm)

Sponar, S. (2017). Experimental Demonstration of direct Path State Characterization by strongly measuring Weak Values in Neutron Interferometry. In Proceedings ICNS 2017. International Conference on Neutron Scattering (ICNS 2017), Dajon, Korea (the Republic of). http://hdl.handle.net/20.500.12708/44913 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Durstberger-Rennhofer, K., Geppert, H., Badurek, G., Rauch, H., & Hasegawa, Y. (2012). Triple Entanglement in Neutron Interferometric and Polarimetric Experiments. In Journal of Physics: Conference Series (p. 012044). Journal of Physics: Conference Series. https://doi.org/10.1088/1742-6596/340/1/012044 ( reposiTUm)

Klepp, J., Sponar, S., Filipp, S., Lettner, M., Badurek, G., & Hasegawa, Y. (2008). Nonadditivity of Quantum Phases for mixed States. In Proceedings of the Junior Scientist Conference 2008 (pp. 129–130). Vienna University of Technology. http://hdl.handle.net/20.500.12708/44467 ( reposiTUm)

Klepp, J., Sponar, S., Filipp, S., Lettner, M., Badurek, G., & Hasegawa, Y. (2009). Nonadditive mixed state phase in neutron optics. In Foundations of Probability and Physics - 5 (pp. 314–318). American Institute of Physics. http://hdl.handle.net/20.500.12708/26708 ( reposiTUm)

Aziz, D., Bosina, J., Degenkolb, S., Dittus, H., Filter-Pieler, H., Grüner, C., Hiesmayr, B. C., Jenke, T., Lowe, L., Sandmann, T., Sponar, S., Tremmel, J., & Abele, H. (2025, August 20). A new view on Quantum Computers [Poster Presentation]. Joint Annual Meeting of the Austrian and Swiss Physical Society (ÖPG-SPS 2025), Wien, Austria. ( reposiTUm)

Sponar, S. (2024, April 12). Neutron Interferometry [Poster Presentation]. Quantum Day 4 Students, Wien, Austria. ( reposiTUm)

Trunner, C., & Sponar, S. (2024, June 3). A NEW NEUTRON IMAGING FACILITY AT THE TRIGA MARK II REACTOR OF THE TU WIEN [Poster Presentation]. 12th World Conference on Neutron Radiography, Idaho, United States of America (the). https://doi.org/10.34726/8141 ( reposiTUm)

Danner, A., Obigane, K., Geerits, N., Lemmel, H., Wagner, R., Sponar, S., & Hasegawa, Y. (2021). Three path quantum Cheshire Cat observed in neutron interferometry. ÖPG-SPS Jahrestagung 2021, Innsbruck, Austria, Austria. http://hdl.handle.net/20.500.12708/135476 ( reposiTUm)

Sponar, S. (2020). Measurement Uncertainty Relations studied in Neutron Optics. Quantum Frontiers & Fundamentals (2020), Bangalore, India. http://hdl.handle.net/20.500.12708/135069 ( reposiTUm)

Sponar, S. (2020). Particle and Quantum Physics with Neutrons studied at the Atominstitut. FAKT Workshop 2020: Particle Physics Retreat, Semmering, Austria, Austria. http://hdl.handle.net/20.500.12708/135070 ( reposiTUm)

Sponar, S. (2019). Measurement Uncertainty Relations and Which-Way Experiments studied in Neutron Optics. Time and fundamentals of quantum mechanics 2019, Jerusalem, Israel. http://hdl.handle.net/20.500.12708/134611 ( reposiTUm)

Sponar, S. (2019). Quantum Correlations, Weak Values & Which-Way Measurements studied in Neutron Interferometry. Joint Annual Meeting OePG / SPG 2019, Zurich, Switzerland. http://hdl.handle.net/20.500.12708/134843 ( reposiTUm)

Sponar, S. (2019). Measurement Uncertainty Relations studied in Neutron Optics. Quantum Africa 5 (2019), Cape Town, South Africa. http://hdl.handle.net/20.500.12708/134844 ( reposiTUm)

Sponar, S. (2019). Weak and Which-Way Measurements studied in Neutron Interferometry. European Conference on Neutron Scattering (ENCNS)(2019), St. Petersburg, Russian Federation (the). http://hdl.handle.net/20.500.12708/134842 ( reposiTUm)

Sponar, S. (2019). Neutron interferometry: past, present and future. Problems of Theoretical and Mathematical Physics (2019), Kyiv, Ukraine. http://hdl.handle.net/20.500.12708/134850 ( reposiTUm)

Danner, A., Demirel, B., Kersten, W., Lemmel, H., Sponar, S., Wagner, R., & Hasegawa, Y. (2018). Observation of Spin-Rotation Coupling in Neutron Optics. 681. WE-Heraeus-Seminar on Particle Physics with Cold and Ultra-Cold Neutrons (2018), Bad Honnef, Germany. http://hdl.handle.net/20.500.12708/134511 ( reposiTUm)

Sponar, S. (2018). Weak Measurements and Weak Values studied in Neutron Interferometry. International Workshop on Particle Physics at Neutron Sources, PPNS-2018, Grenoble, France. http://hdl.handle.net/20.500.12708/134078 ( reposiTUm)

Sponar, S. (2018). Weak Measurements and Weak Values studied in Neutron Interferometry. Polarised Neutrons for Condensed-Matter (PNCMI 2018), Abingdon, United Kingdom of Great Britain and Northern Ireland (the). http://hdl.handle.net/20.500.12708/134176 ( reposiTUm)

Sponar, S., & Hasegawa, Y. (2018). Weak Values & Quantum Paradoxes: Experimental Studies in Neutron Optics. AAV Anniversary Conference - Celebrating 30 Years of Weak Values, Chapman University, United States of America (the). http://hdl.handle.net/20.500.12708/133978 ( reposiTUm)

Sponar, S. (2017). Measurement Uncertainty Relations: operator-based, operational & information-theoretic approaches studied in Neutron Optics. 3rd International Conference Quantum Foundations 2017 (ICQF17), Patna, India. http://hdl.handle.net/20.500.12708/133676 ( reposiTUm)

Mach, W., Abele, H., Filter, H., Hasegawa, Y., Jenke, T., Lemmel, H., Jericha, E., Konrad, G., Sponar, S., Villa, M., & Zawisky, M. (2016). Current projects at the Atominstitut. NuPECC meeting Mini Workshop Wien (2016), Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/133299 ( reposiTUm)

Mach, W., Abele, H., Filter, H., Hasegawa, Y., Jericha, E., Konrad, G., Sponar, S., Villa, M., & Zawisky, M. (2016). Current projects at the Atominstitut. Symposium “Future Possible Use of Neutron and Synchrotron Sources,” Graz, Austria. http://hdl.handle.net/20.500.12708/132867 ( reposiTUm)

Sponar, S. (2016). Error-Disturbance Uncertainty Relations studied in Neutron Optics. Nesy Symposium (2016), Graz, Austria. http://hdl.handle.net/20.500.12708/132877 ( reposiTUm)

Sponar, S. (2016). Weak Measurement studied in Neutron Optics. Workshop on Matter-Wave Interferometry (2016), Maryland, United States of America (the). http://hdl.handle.net/20.500.12708/132876 ( reposiTUm)

Sponar, S. (2015). Error-Disturbance Uncertainty Relations studies in Neutron Optics. Quantum Theorie: from foundations to technology, Växjö, Sweden. http://hdl.handle.net/20.500.12708/131948 ( reposiTUm)

Sponar, S. (2015). Measurement - Disturbance Uncertainty Relations studied in Neutron Optics. VI European Conference On Neutron Scattering (ECNS2015), Zaragoza, Spain. http://hdl.handle.net/20.500.12708/132049 ( reposiTUm)

Sponar, S. (2015). Measurement - Disturbance Uncertainty Relations studied in Neutron Optics. International Conference on Quantum Foundations 2015 (ICQF15), Patna, India. http://hdl.handle.net/20.500.12708/132195 ( reposiTUm)

Denkmayr, T., Geppert, H., Sulyok, G., Demirel, B., Erhart, J., Sponar, S., & Hasegawa, Y. (2014). Quantum Cheshire-Cat and uncertainty relation studied with neutrons. Quantum [Un]Speakables II: 50 Years of Bell’s Theorem, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/131222 ( reposiTUm)

Sponar, S., Denkmayr, T., Erhart, J., Geppert, H., Lemmel, H., Matzkin, A., Sulyok, G., Ozawa, M., & Hasegawa, Y. (2014). Neutron optical Measurements studying Quantum Mechanics. GRANIT 2014-Workshop, France. http://hdl.handle.net/20.500.12708/131145 ( reposiTUm)

Sponar, S. (2014). Uncertainty Relations and Quantum Cheshire Cats studied in Neutron Optics. Quantum Africa 3 “Advances in Quantum Sciences,” Rabat, Morocco. http://hdl.handle.net/20.500.12708/131360 ( reposiTUm)

Sponar, S. (2014). Error-disturbance uncertainty relations and the quantum Cheshire Cat studied in neutron optical experiments. Frontiers in Matter Wave Optics, Kreta, Greece. http://hdl.handle.net/20.500.12708/131361 ( reposiTUm)

Sponar, S. (2013). Error-Disturbance Uncertainty Relations in Spin Measurements. Fourth Nagoya Winter Workshop on Quantum Information 2013, Nagoya, Japan. http://hdl.handle.net/20.500.12708/130598 ( reposiTUm)

Sponar, S., Sulyok, G., Erhart, J., Badurek, G., Ozawa, M., & Hasegawa, Y. (2013). Violation of Heisenberg’s Error-Disturbance Uncertainty Relation in Neutron Spin Measurements. International Conference on Neutron Scattering ICNS2013, Edinburgh, United Kingdom of Great Britain and Northern Ireland (the). http://hdl.handle.net/20.500.12708/130599 ( reposiTUm)

Sponar, S., Klepp, J., Schmitzer, C., Bartosik, H., Durstberger-Rennhofer, K., Rauch, H., & Hasegawa, Y. (2012). Tests of alternative quantum theories with neutrons. QCMC 2012 Intl. Conference on Quantum Communication, Measurement and Computing, Wien, Austria. http://hdl.handle.net/20.500.12708/129956 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Schmitzer, C., Bartosik, H., Durstberger-Rennhofer, K., Rauch, H., & Hasegawa, Y. (2012). Alternative Theories of Quantum Mechanics studied with Neutrons. QCMC 2012, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/129740 ( reposiTUm)

Sponar, S., Sulyok, G., Erhart, J., Klepp, J., Schmitzer, C., Geppert, H., Durstberger-Rennhofer, K., Badurek, G., Ozawa, M., & Hasegawa, Y. (2012). Foundations of Quantum Mechanics explored with Neutrons. Quantum Africa 2, Mont aux Sources Hotel, Northern Drakensberg, South Africa. http://hdl.handle.net/20.500.12708/130170 ( reposiTUm)

Sponar, S., Lemmel, H., Rauch, H., & Hasegawa, Y. (2012). Foundations of Quantum Mechanics explored with Neutrons. Science & Scientists @ ESS 2012, Berlin, Germany. http://hdl.handle.net/20.500.12708/129647 ( reposiTUm)

Erhart, J., Sponar, S., Sulyok, G., Badurek, G., Ozawa, M., & Hasegawa, Y. (2011). Experimental confirmation of a universally valid uncertainty relation for error and disturbance in spin-measurements. NESY Winterschool, Planneralm, Österreich, Austria. http://hdl.handle.net/20.500.12708/128911 ( reposiTUm)

Erhart, J., Sponar, S., Sulyok, G., Badurek, G., Ozawa, M., & Hasegawa, Y. (2011). A universally valid uncertainty relation demonstrated by successive spin-measurements. 2011 Einsteins in the City, New York, USA, Non-EU. http://hdl.handle.net/20.500.12708/128910 ( reposiTUm)

Durstberger-Rennhofer, K., Schmitzer, C., Bartosik, H., Klepp, J., Sponar, S., Badurek, G., & Hasegawa, Y. (2011). Falsification of Leggett’s model using neutron matter waves. Jahrestagung der ÖPG, Lausanne, Switzerland, Non-EU. http://hdl.handle.net/20.500.12708/128956 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Filipp, S., Erdösi, D., Durstberger-Rennhofer, K., Bertlmann, R. A., Badurek, G., Rauch, H., & Hasegawa, Y. (2011). Multi-Entanglement in Neutron Interferometry Experiments. 5th European Conference on Neutron Scattering, Prague, CZ, EU. http://hdl.handle.net/20.500.12708/128987 ( reposiTUm)

Hasegawa, Y., Durstberger-Rennhofer, K., Erdösi, D., Erhardt, J., Klepp, J., Lemmel, H., Sponar, S., Sulyok, G., & Rauch, H. (2011). Foundation of Quantum Mechanics Explored with Neutrons. 5th European Conference on Neutron Scattering, Prague, CZ, EU. http://hdl.handle.net/20.500.12708/128990 ( reposiTUm)

Sponar, S., Klepp, J., Schmitzer, C., Bartosik, H., Both, M., Geppert, H., Durstberger-Rennhofer, K., Badurek, G., & Hasegawa, Y. (2011). Entanglement in Neutron Poarimetric Experiments. ÖPG Jahrestagung 2011, Lausanne, Switzerland, Austria. http://hdl.handle.net/20.500.12708/129649 ( reposiTUm)

Erhart, J., Sponar, S., Sulyok, G., Badurek, G., Ozawa, M., & Hasegawa, Y. (2010). Experimental confirmation of a universally valid uncertainty relation for error and disturbance in spin-measurements. 14. Deutsche Physikerinnentagung 2010, München, Germany, EU. http://hdl.handle.net/20.500.12708/128912 ( reposiTUm)

Erhart, J., Sponar, S., Sulyok, G., Badurek, G., Ozawa, M., & Hasegawa, Y. (2010). Experimental confirmation of a universally valid uncertainty relation for error and disturbance in spin-measurements. 60. Jahrestagung der Österreichischen Physikalischen Gesellschaft (ÖPG), Salzburg, Austria. http://hdl.handle.net/20.500.12708/128913 ( reposiTUm)

Hasegawa, Y., Badurek, G., Klepp, J., Loidl, R., Sponar, S., & Rauch, H. (2009). Neutron as a quantum system: exploring multi-entanglement in a single-neutron system. 3rd Vienna symposium on the Foundation of Modern Physics, Wien, Austria. http://hdl.handle.net/20.500.12708/127937 ( reposiTUm)

Klepp, J., Sponar, S., Bartosik, H., Filipp, S., Rauch, H., Schmitzer, C., & Hasegawa, Y. (2009). Quantum eraser and complementarity in neutron optics. 3rd Vienna symposium on the Foundation of Modern Physics, Wien, Austria. http://hdl.handle.net/20.500.12708/127938 ( reposiTUm)

Sponar, S., Klepp, J., Loidl, R., Filipp, S., Durstberger-Rennhofer, K., Bertlmann, R. A., Hasegawa, Y., & Rauch, H. (2009). Berry phase in entangled system: a single-neutron interferometer experiment. 3rd Vienna symposium on the Foundation of Modern Physics, Wien, Austria. http://hdl.handle.net/20.500.12708/127939 ( reposiTUm)

Sponar, S., Klepp, J., Fillip, S., Loidl, R., Durstberger-Rennhofer, K., Bertlmann, R. A., Hasegawa, Y., Badurek, G., & Rauch, H. (2009). Berry Phase in Entangled Systems: A Single-Neutron Interferometer Experiment. 16. Meeting Nonlocal Seminar, Vienna, Austria, Austria. http://hdl.handle.net/20.500.12708/129648 ( reposiTUm)

Hasegawa, Y., Badurek, G., Filipp, S., Klepp, J., Loidl, R., Sponar, S., & Rauch, H. (2008). Multi-entanglement in a single-neutron system. 4th American Conference on Neutron Scattering (ACNS2008), Santa Fe, USA, Non-EU. http://hdl.handle.net/20.500.12708/127339 ( reposiTUm)

Klepp, J., Sponar, S., Badurek, G., Filipp, S., Jericha, E., Leitner, M., & Hasegawa, Y. (2007). Observation of mixed state phase using neutron polarimetry. Fachausschusstagung, ÖPG, Kern- und Teilchenphysik, Seggauberg, Austria. http://hdl.handle.net/20.500.12708/126512 ( reposiTUm)

Loidl, R., Klepp, J., Sponar, S., Filipp, S., Badurek, G., Rauch, H., & Hasegawa, Y. (2007). Violation of Mermnin’s inequality for GHZ states in neutron interferometry. Fachausschusstagung, ÖPG, Kern- und Teilchenphysik, Seggauberg, Austria. http://hdl.handle.net/20.500.12708/126511 ( reposiTUm)

Sponar, S., Klepp, J., Filipp, S., Badurek, G., Rauch, H., & Hasegawa, Y. (2007). Coherent manipulationfor multi-entanglement of neutrons. Fachausschusstagung, ÖPG, Kern- und Teilchenphysik, Seggauberg, Austria. http://hdl.handle.net/20.500.12708/126510 ( reposiTUm)

Klepp, J., Sponar, S., Hasegawa, Y., Filipp, S., Lettner, M., Jericha, E., & Badurek, G. (2006). Observation of geometric mixed state phase using neutron polarimetry. Quantum Mechanics: From Fundamental Problems to Applications, Bertinoro (Italy), EU. http://hdl.handle.net/20.500.12708/126272 ( reposiTUm)

Sponar, S., Klepp, J., Hasegawa, Y., Jericha, E., & Badurek, G. (2006). Non-cyclic geometric phases in mixed state neutron polarimetry. 13th European Workshop on Quantum Optics, Wien, Austria. http://hdl.handle.net/20.500.12708/126347 ( reposiTUm)

Sponar, S., Klepp, J., Hasegawa, Y., Jericha, E., & Badurek, G. (2005). Noncyclic mixed state phase in SU(2) neutron polarimetric experiments. 55. Jahrestagung der Österreichischen Physikalischen Gesellschaft, Wien, Austria. http://hdl.handle.net/20.500.12708/125525 ( reposiTUm)

Klepp, J., Sponar, S., Hasegawa, Y., Jericha, E., & Badurek, G. (2004). Noncyclic mixed state phase in SU(2) neutron polarimetry. 54. Jahrestagung der Österreichischen Physikalischen Gesellschaft, Linz, Austria. http://hdl.handle.net/20.500.12708/125181 ( reposiTUm)

Jericha, E., Badurek, G., Baron, M., Hasegawa, Y., Jäkel, M. R., Klepp, J., Rofner, A., Sponar, S., Trinker, M., Villa, M., & Rauch, H. (2004). Neutron Optics Experiments at the TRIGA Mark II reactor of the Atominstitut Wien. 2nd World TRIGA Users Conf., Atominstitut (Wien), Austria. http://hdl.handle.net/20.500.12708/125514 ( reposiTUm)

Demirel, B., Sponar, S., Sulyok, G., Ozawa, M., & Hasegawa, Y. (2015). Residual error-disturbance uncertainties in successive spin ½ measurements tested in matter-wave optics. arXiv. https://doi.org/10.48550/arXiv.1511.03462 ( reposiTUm)

Lemmel, H., Sponar, S., & Hofmann, H. F. (2022). Pfadbestimmung im Doppelspalt (Issue 11.22, pp. 24–26). ( reposiTUm)

Sponar, S. (2021). Uncertainty relations, weak measurements, and entanglement studied in neutron optics [Professorial Dissertation, Technische Universität Wien]. reposiTUm. http://hdl.handle.net/20.500.12708/158920 ( reposiTUm)

Sponar, S. (2004). Non-cyclic geometric phases in neutron polarimetric experiments [Diploma Thesis, Technische Universität Wien]. reposiTUm. http://hdl.handle.net/20.500.12708/185891 ( reposiTUm)