Home > Search Results: Romero Isart, Oriol
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Results overview: Found 3 records in 0.02 seconds.
Articles, 2 records found
Course materials, 1 records found
Articles 2 records found  
1.
4 p, 100.1 KB Purity estimation with separable measurements / Bagán Capella, Emili (Universitat Autònoma de Barcelona. Departament de Física) ; Ballester, M. A. (University of Utrecht. Department of Mathematics) ; Muñoz Tapia, Ramon (Universitat Autònoma de Barcelona. Departament de Física) ; Romero-Isart, Oriol (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Given a large number N of copies of a qubit state of which we wish to estimate its purity, we prove that separable-measurement protocols can be as efficient as the optimal joint-measurement one if classical communication is used. [...]
2005 - 10.1103/PhysRevLett.95.110504
Physical review letters, Vol. 95, Issue 11 (September 2005) , p. 110504  
Detailed record -
2.
4 p, 111.3 KB Separable measurement estimation of density matrices and its fidelity gap with collective protocols / Bagán Capella, Emili (Universitat Autònoma de Barcelona. Departament de Física) ; Ballester, M. A. (Centrum voor Wiskunde en Informatica (Amsterdam, Països Baixos)) ; Gill, R. D. (University of Leiden. Department of Mathematics) ; Muñoz Tapia, Ramon (Universitat Autònoma de Barcelona. Departament de Física) ; Romero-Isart, Oriol (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
We show that there exists a gap between the performance of separable and collective measurements in the qubit mixed-state estimation that persists in the large sample limit. We characterize the gap with sharp asymptotic bounds on mean fidelity. [...]
2006 - 10.1103/PhysRevLett.97.130501
Physical review letters, Vol. 97, Issue 13 (September 2006) , p. 130501  
Detailed record -

Course materials 1 records found  
1.
2 p, 7.3 KB Física I [29047] / Delfino, Manuel (Universitat Autònoma de Barcelona. Departament de Física) ; Sidro Martín, Núria ; Castelo Torras, Javier ; Romero Isart, Oriol ; Universitat Autònoma de Barcelona. Escola Tècnica Superior d'Enginyeria
2006-07
Enginyer Químic [511]  
Detailed record - Creative Commons

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