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Resultats globals: 5 registres trobats en 0.01 segons.
Articles, 5 registres trobats
Articles 5 registres trobats  
1.
3 p, 124.5 KB Spin-induced angular momentum switching / Fernández Calvo, Gabriel (Universitat Autònoma de Barcelona. Departament de Física) ; Picón Álvarez, Antonio (Universitat Autònoma de Barcelona. Departament de Física)
When light is transmitted through optically inhomogeneous and anisotropic media the spatial distribution of light can be modified according to its input polarization state. A complete analysis of this process, based on the paraxial approximation, is presented, and we show how it can be exploited to produce a spin-controlled change in the orbital angular momentum of light beams propagating in patterned space-variant optical axis phase plates. [...]
2007 - 10.1364/OL.32.000838
Optics letters, Vol. 32, No. 7 (1 April 2007) , p. 838-840  
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2.
10 p, 167.8 KB Quantum field theory of photons with orbital angular momentum / Fernández Calvo, Gabriel (Universitat Autònoma de Barcelona. Departament de Física) ; Picón Álvarez, Antonio (Universitat Autònoma de Barcelona. Departament de Física) ; Bagán Capella, Emili (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
A quantum-field-theory approach is put forward to generalize the concept of classical spatial light beams carrying orbital angular momentum to the single-photon level. This quantization framework is carried out both in the paraxial and nonparaxial regimes. [...]
2006 - 10.1103/PhysRevA.73.013805
Physical review. A, Vol. 73, Issue 1 (January 2006) , p. 013805-1-013805-10  
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3.
8 p, 313.2 KB Measuring two-photon orbital angular momentum entanglement / Fernández Calvo, Gabriel (Universitat Autònoma de Barcelona. Departament de Física) ; Picón Álvarez, Antonio (Universitat Autònoma de Barcelona. Departament de Física) ; Bramon Planas, Albert (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
We put forward an approach to estimate the amount of bipartite spatial entanglement of down-converted photon states correlated in orbital angular momentum and the magnitude of the transverse (radial) wave vectors. [...]
2007 - 10.1103/PhysRevA.75.012319
Physical review. A, Vol. 75, Issue 1 (January 2007) , p. 012319-1-012319-8  
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4.
7 p, 1.5 MB Manipulation of single-photon states encoded in transverse spatial modes : possible and impossible tasks / Fernández Calvo, Gabriel (Universitat Autònoma de Barcelona. Departament de Física) ; Picón Álvarez, Antonio (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Controlled generation and manipulation of photon states encoded in their spatial degrees of freedom is a crucial ingredient in many quantum-information tasks exploiting higher-than-two dimensional encoding. [...]
2008 - 10.1103/PhysRevA.77.012302
Physical review. A, Vol. 77, Issue 1 (January 2008) , p. 012302-1-012302-7  
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5.
4 p, 1.3 MB Measuring the complete transverse spatial mode spectrum of a wave field / Fernández Calvo, Gabriel (Instituto de Matemàtica Aplicada en Ciencia e Ingeniería (Ciudad Real)) ; Picón Álvarez, Antonio (Universitat Autònoma de Barcelona. Departament de Física) ; Zambrini, Roberta (Institute for Cross-Disciplinary Physics and Complex Systems (Palma de Mallorca)) ; American Physical Society
We put forward a method that allows the experimental determination of the entire spatial mode spectrum of any arbitrary monochromatic wave field in a plane normal to its propagation direction. For coherent optical fields, our spatial spectrum analyzer can be implemented with a small number of benchmark refractive elements embedded in a single Mach-Zehnder interferometer. [...]
2008 - 10.1103/PhysRevLett.100.173902
Physical review letters, Vol. 100, Issue 17 (April 2008) , p. 173902  
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