RT Journal Article T1 Maximum likelihood state between measurements A1 Luis Aina, Alfredo AB We estimate the quantum state of a system between two measurements via a maximum likelihood strategy. This incorporates all the information provided by preselection and postselection in a legitimate quantum state. Moreover, it allows to include any other constraint derived from practical considerations. PB American Physical Society SN 1050-2947 YR 2009 FD 2009-09-02 LK https://hdl.handle.net/20.500.14352/44645 UL https://hdl.handle.net/20.500.14352/44645 LA eng NO ©2009 The American Physical Society. This work was supported by Project No. FIS2008-01267 of the Spanish Direccion General de Investigacion del Ministerio de Ciencia e Innovacion. NO Ministerio de Ciencia e Innovación (MCINN), España DS Docta Complutense RD 7 abr 2025