title: Realizing total reciprocity violation in the phase for photon scattering.
abstract: Reciprocity is when wave or quantum scattering satisfies a symmetry property, connecting a scattering process with the reversed one. While reciprocity involves the interchange of source and detector, it is fundamentally different from rotational invariance, and is a generalization of time reversal invariance, occurring in absorptive media as well. Due to its presence at diverse areas of physics, it admits a wide variety of applications. For polarization dependent scatterings, reciprocity is often violated, but violation in the phase of the scattering amplitude is much harder to experimentally observe than violation in magnitude. Enabled by the advantageous properties of nuclear resonance scattering of synchrotron radiation, we have measured maximal, i.e., 180-degree, reciprocity violation in the phase. For accessing phase information, we introduced a new version of stroboscopic detection. The scattering setting was devised based on a generalized reciprocity theorem that opens the way to construct new types of reciprocity related devices.
authors.affiliation: Wigner RCP, RMKI, P.O.B. 49, 1525 Budapest, Hungary.
authors.forename: László
authors.initials: L
authors.lastname: Deák
authors.affiliation: Wigner RCP, RMKI, P.O.B. 49, 1525 Budapest, Hungary.
authors.forename: László
authors.initials: L
authors.lastname: Bottyán
authors.affiliation: Budapest University of Technology and Economics, 3 Műegyetem rkp., 1111 Budapest, Hungary.
authors.forename: Tamás
authors.initials: T
authors.lastname: Fülöp
authors.affiliation: Wigner RCP, RMKI, P.O.B. 49, 1525 Budapest, Hungary.|European Synchrotron Radiation Facility, BP 220, 38043 Grenoble, France.
authors.forename: Dániel Géza
authors.initials: DG
authors.lastname: Merkel
authors.affiliation: Wigner RCP, RMKI, P.O.B. 49, 1525 Budapest, Hungary.
authors.forename: Dénes Lajos
authors.initials: DL
authors.lastname: Nagy
authors.affiliation: Wigner RCP, RMKI, P.O.B. 49, 1525 Budapest, Hungary.
authors.forename: Szilárd
authors.initials: S
authors.lastname: Sajti
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Kai Sven
authors.initials: KS
authors.lastname: Schulze
authors.affiliation: Johannes Gutenberg Universität Mainz, Staudinger Weg 9, 55099 Mainz, Germany.
authors.forename: Hartmut
authors.initials: H
authors.lastname: Spiering
authors.affiliation: Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany.|Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Ingo
authors.initials: I
authors.lastname: Uschmann
authors.affiliation: Deutsches Elektronen-Synchrotron (PETRA III), Notkestrasse 85, 22607 Hamburg, Germany.
authors.forename: Hans-Christian
authors.initials: HC
authors.lastname: Wille