Title:
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Optical encryption in the longitudinal domain of focused fields
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Author:
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Carnicer González, Arturo; Juvells Prades, Ignacio; Javidi, Bahram; Martínez-Herrero, Rosario
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Other authors:
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Universitat de Barcelona |
Abstract:
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We develop a method for encoding information in the longitudinal component of a focused field. Focused beams display a nonzero contribution of the electric field in the direction of propagation. However, the associated irradiance is very weak and difficult to isolate from the transverse part of the beam. For these reasons, the longitudinal component of a focused field could be a good choice for encoding and securing information. Using the Richards and Wolf formalism we show how to encrypt information in the longitudinal domain of the focal area. In addition, we use quantum imaging techniques to enhance the security and to prevent unauthorized access to the information. To the best of our knowledge, this is the first report on using the longitudinal component of the focused fields in optical security. |
Subject(s):
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-Polarització (Llum) -Òptica física -Camps electromagnètics -Xifratge (Informàtica) -Fotònica -Seguretat informàtica -Reconeixement òptic de formes -Polarization (Light) -Physical optics -Electromagnetic fields -Data encryption (Computer science) -Photonics -Computer security -Optical pattern recognition |
Rights:
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(c) Optical Society of America, 2016
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Document type:
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Article Article - Published version |
Published by:
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Optical Society of America
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