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H. Walther [5]Helmut G. Walther [3]Helmut Walther [2]Herbert Walther [1]
  1.  41
    An Operational Analysis of Quantum Eraser and Delayed Choice.Marlan O. Scully & Herbert Walther - 1998 - Foundations of Physics 28 (3):399-413.
    In the present paper we expand upon ideas published some time ago in connection with which path detectors based on the micromaser. Frequently questions arise concerning the time ordering of detection and eraser events. We here show, by a detailed and careful analysis of a quantum eraser experimental setup, that the experimenter can choose to ascertain particle-like which path information or wavelike interference information even after the atom has hit the screen.
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  2.  25
    Generation of a Coherent State of the Micromaser Field.Fam Le Kien, M. O. Scully & H. Walther - 1993 - Foundations of Physics 23 (2):177-184.
    It is found that a coherent state of the cavity field can be generated in a micromaser with injected atoms in a coherent superposition of the upper and lower states. The dependence of the density matrix elements of the field on the number of injected atoms indicates that due to the same initial atomic coherence the emission of separately injected single atoms in the cavity is a cooperative process.
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  3.  41
    Area in Phase Space as Determiner of Transition Probability: Bohr-Sommerfeld Bands, Wigner Ripples, and Fresnel Zones. [REVIEW]W. Schleich, H. Walther & J. A. Wheeler - 1988 - Foundations of Physics 18 (10):953-968.
    We consider an oscillator subjected to a sudden change in equilibrium position or in effective spring constant, or both—to a “squeeze” in the language of quantum optics. We analyze the probability of transition from a given initial state to a final state, in its dependence on final-state quantum number. We make use of five sources of insight: Bohr-Sommerfeld quantization via bands in phase space, area of overlap between before-squeeze band and after-squeeze band, interference in phase space, Wigner function as quantum (...)
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  4. Biedermann i wizjonerzy. O recepcji Feuerbacha u Nietzschego i Wagnera.Helmut Walther - 2000 - Principia.
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  5.  1
    Das gemessene gedächtnis. Zur politisch-argumentativen handhabung der verjährung durch gelehrte juristen Des mittelalters.Helmut G. Walther - 1983 - In Andreas Speer (ed.), Mensura, 1. Halbband: Mass, Zahl, Zahlensymbolik Im Mittelalter. De Gruyter. pp. 212-233.
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  6.  1
    Die ganze Kirchengeschichte als historischer Irrtum? Marsilius von Padua zu den historischen Rahmenbedingungen des päpstlichen Primats.Helmut G. Walther - 2018 - In Maxime Mauriège & Andreas Speer (eds.), Irrtum – Error – Erreur. De Gruyter. pp. 435-456.
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  7.  10
    Fragmente von Metrischen Heiligenviten aus dem XIIten Jahrhundert.H. Walther - 1931 - Speculum 6 (4):600-606.
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  8.  4
    Lex Und Consuetudo Zum Politischen Hintergrund Ihres Verhältnisses in den Lehren der Bologneser Legisten des 12. Bis 14. Jahrhunderts. [REVIEW]Helmut G. Walther - 2014 - In Guy Guldentops & Andreas Speer (eds.), Das Gesetz - the Law - la Loi. De Gruyter. pp. 109-122.
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  9. The Following Lectures Have Been Scheduled: Electron Interferometry and Holography by A. Tonomura, Hitachi Ltd, Hatoyama, Japan; Recent Achievements in Neutron Interferometry by H. Rauch, Osterreichische Universitiiten, Vienna, Austria; Quantum Optics.H. Walther, M. P. I. Fiir Quantenoptik, M. Devoret & A. Aspect - 1994 - Foundations of Physics 24 (1).
     
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  10. The Jaynes-Cummings Model and the One-Atom-Maser.H. Walther - 1993 - In E. T. Jaynes, Walter T. Grandy & Peter W. Milonni (eds.), Physics and Probability: Essays in Honor of Edwin T. Jaynes. Cambridge University Press. pp. 33.
     
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