Parallel sorting of orbital and spin angular momentum components of structured optical beams is demonstrated. Both spin channels are multiplexed within the novel orbital angular momentum (OAM) sorter, reducing the size, weight, and number of elements. The sorted states are linearly spaced over 70 topological charge values. We experimentally and theoretically evaluate the operational range and crosstalk between neighboring channels and find that 30 orbital angular momentum states are available per spin channel for quantum communication or cryptography. This is achieved using an angular momentum sorter that we developed based on geometric phase optical elements. We present two devices consisting of liquid crystal polymer films photoaligned with complex two-dimensional patterns.
Parallel sorting of orbital and spin angular momenta of light in a record large number of channels / Walsh, Gary F.; De Sio, Luciano; Roberts, David E.; Tabiryan, Nelson; Aranda, Francisco J.; Kimball, Brian R.. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 43:10(2018), pp. 2256-2259. [10.1364/OL.43.002256]
Parallel sorting of orbital and spin angular momenta of light in a record large number of channels
De Sio, Luciano;
2018
Abstract
Parallel sorting of orbital and spin angular momentum components of structured optical beams is demonstrated. Both spin channels are multiplexed within the novel orbital angular momentum (OAM) sorter, reducing the size, weight, and number of elements. The sorted states are linearly spaced over 70 topological charge values. We experimentally and theoretically evaluate the operational range and crosstalk between neighboring channels and find that 30 orbital angular momentum states are available per spin channel for quantum communication or cryptography. This is achieved using an angular momentum sorter that we developed based on geometric phase optical elements. We present two devices consisting of liquid crystal polymer films photoaligned with complex two-dimensional patterns.File | Dimensione | Formato | |
---|---|---|---|
Walsh_Parallel-sorting_2018.pdf
solo gestori archivio
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
2.06 MB
Formato
Adobe PDF
|
2.06 MB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.