Luis Aina, Alfredo2023-06-202023-06-202005-07-221050-294710.1103/PhysRevA.72.014106https://hdl.handle.net/20.500.14352/51500©2005 The American Physical Society. This work has been supported by Project No. FIS2004-01814 of the Spanish Dirección General de Investigación del Ministerio de Educación y Ciencia.We investigate duality relations between conjugate observables after measurements performed on a single realization of the system. The application of standard inference methods implies the existence of duality relations for single systems when using classical as well as quantum physics.engjournal articlehttp://dx.doi.org/10.1103/PhysRevA.72.014106http://journals.aps.org/open access535Phase-differenceInterferenceÓptica (Física)2209.19 Óptica Física