Publications Neptun

S. Sponar, A. Danner, M. Ozawa, and Y. Hasegawa, Neutron Optical Test of Completeness of Quantum Root-Mean-Square Errors, npj Quantum Information 7, 106 (2021) or arXiv:2009.06418 [quant-ph].

S. Sponar, A. Danner, V. Pecile, N. Einsidler, B. Demirel, and Y. Hasegawa, Experimental Test of Entropic Noise-Disturbance Uncertainty Relations for Three-Outcome Qubit Measurements, Physical Review Research 3, 023175 (2021) or arXiv:2005.13410 [quant-ph].

S. Sponar, A. Danner, K. Obigane, S. Hack, and Y. Hasegawa, Experimental Test of Tight State-Independent Preparation Uncertainty Relations for Qubits, Physical Review A 102, 042204 (2020) or [quant-ph/2002.10725].

B. Demirel, S. Sponar, A. A. Abbott, C, Branciard, and Y. Hasegawa, Experimental test of an entropic measurement uncertainty relation for arbitrary qubit observables, New Journal of Physics 21, 013038 (2019) [quant-ph/1711.05023].

M. Blackener, Demirel , I. Drevenšek-Olenik, M. Fally, P. Flauger, P. Geltenbort, Y. Hasegawa, R. Kurinjimala, M. Ličen, C. Pruner, S. Sponar, Y. Tomita, J. Klepp, Monte-Carlo simulation of neutron transmission through nanocomposite materials for neutron-optics applications, Nuclear Instruments and Methods in Physics Research A 916, 454–157 (2019).

Georg Sulyok and Stephan Sponar, Heisenberg’s error-disturbance uncertainty relation: Experimental study of competing approaches,  Physical Review A 96, 022137 (2017).

B. Demirel, S. Sponar, G. Sulyok, M. Ozawa, and Y. Hasegawa, Experimental Test of Residual Error-Disturbance Uncertainty Relations for Mixed Spin-1⁄2 States, Physical Review Letters 117, 140402 (2016) [quant-ph/1511.03462].

S. Sponar, Error-disturbance uncertainty relations in neutron spin measurements, International Journal of Quantum Information 14, 1640016 (2016).

G. Sulyok, S. Sponar, B. Demirel, F. Buscemi, M.J. Hall, M. Ozawa, and Y. Hasegawa, Experimental test of entropic noise-disturbance uncertainty relations for spin – 1/2 measurements, Physical Review Letters 115, 030401 (2015) [quant-ph/1504.04200].

B. Demirel, S. Sponar, and Y. Hasegawa, Measurement of the spin-rotation coupling in neutron polarimetry, New Journal of Physics 17, 023065 (2015).

S. Sponar, G. Sulyok, J. Erhart, and Y. Hasegawa, Error-Disturbance Uncertainty Relations in Neutron-Spin Measurements, Advances in High Energy Physics 2014, 735398 (2014).

G. Sulyok, S. Sponar, J. Erhart, G. Badurek, M. Ozawa, and Y. Hasegawa, Violation of Heisenberg’s error-disturbance uncertainty relation in spin measurements, Physical Review A 88, 022110 (2013) [quant-ph/1305.7251].

J. Erhart, S. Sponar, G. Sulyok, G. Badurek, M. Ozawa, and Y. Hasegawa, Experimental demonstration of a universally valid error-disturbance uncertainty relation in spin-measurements, Nature Physics 8, 185-189 (2012) [quant-ph/1201.1833].

S. Sponar, J. Klepp, C. Zeiner, G. Badurek, and Y. Hasegawa, Violation of a Bell-like inequality for spin-energy entanglement in neutron polarimetry, Physics Letters A 374, 431-434 (2010) [quant-ph/0907.4654].

S. Sponar, J. Klepp, G. Badurek, and Y. Hasegawa, Zero-field and Larmor spinor precessions in a neutron polarimeter experiment, Physics Letters A 372, 3153-3156 (2008) [quant-ph/0802.1411].

J. Klepp, S. Sponar, S. Filipp, M. Lettner, G. Badurek, and Y. Hasegawa, Observation of Nonadditive Mixed-State Phases with Polarized Neutronss, Physical Review Letters 101, 150404 (2008) [quant-ph/0809.0572].

J. Klepp, S. Sponar, Y. Hasegawa, E. Jericha, and G. Badurek, Noncyclic Pancharatnam phase for mixed state SU(2) evolution in neutron polarimetrys, Physical Letters A 342, 48-52 (2005) [quant-ph/0505.209].