Diseño, construcción y test de una fuente emisora de fotón único
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2012
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Abstract
El desarrollo de fuentes eficientes emisoras de fotón único plantea un gran reto en el contexto de la comunicación cuántica, en concreto en el entorno de la codificación de la información transmitida (criptografía). Uno de los principios de funcionamiento de los sistemas de criptografía cuántica está centrado en la codificación de la información a transmitir con el menor número posible de fotones (uno en el caso ideal) para minimizar, de este modo, los ataques externos al sistema. Asimismo, se evita el envío de información redundante, ganando en velocidad de transmisión. Asimismo, la longitud de onda de emisión, su ancho espectral, la forma de excitación de la fuente emisora de fotón único, la posibilidad de emisión polarizada y la temperatura de trabajo son factores relevantes que se estudiarán en este informe y que servirán de guía a la hora de clasificar dichas fuentes. En este trabajo se detalla el diseño, fabricación y testeo de un sistema capaz de emitir fotones individuales de forma controlada a una longitud de onda de 1550 nm mediante la excitación de un láser con un sistema electrónico generador de pulsos.
[ABSTRACT] The development of efficient sources of single photon sources poses a major challenge in the context of quantum communication, particularly in the vicinity of the coding of the transmitted information (cryptography). One of the principles of operation of quantum cryptography systems is focused on the coding of information transmitted with the least possible number of photons (one in the ideal case) to minimize in this way, the system from external attacks. It also avoids sending redundant information, gaining in speed of transmission. Also, the emission wavelength, spectral width, the shape of excitation single photon emitting source, the possibility of polarized emission and operating temperature are important factors that are discussed in this report and will guide when classifying these sources. This paper details the design, manufacture and testing of a system capable of emitting single photons in a controlled manner at a wavelength of 1550 nm by the excitation of a laser with an electronic pulse generator.
[ABSTRACT] The development of efficient sources of single photon sources poses a major challenge in the context of quantum communication, particularly in the vicinity of the coding of the transmitted information (cryptography). One of the principles of operation of quantum cryptography systems is focused on the coding of information transmitted with the least possible number of photons (one in the ideal case) to minimize in this way, the system from external attacks. It also avoids sending redundant information, gaining in speed of transmission. Also, the emission wavelength, spectral width, the shape of excitation single photon emitting source, the possibility of polarized emission and operating temperature are important factors that are discussed in this report and will guide when classifying these sources. This paper details the design, manufacture and testing of a system capable of emitting single photons in a controlled manner at a wavelength of 1550 nm by the excitation of a laser with an electronic pulse generator.
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Texto completo retirado por indicación del autor, con fecha 1 de Febrero de 2017