نوع مقاله : مقاله پژوهشی
نویسنده
استادیار،دانشگاه صنعتی مالک اشتر شاهین شهر،شاهین شهر، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
The problem of achieving a higher secure key rate and a larger key distribution distance has always been the main concern of researchers in the field of quantum key distribution (QKD). Due to the loss of quantum states, there are many challenges in performing QKD in optical fiber with a secure key rate of the order of kbit⁄s and lengths higher than 50 km. This paper presents the design and simulation of an efficient QKD system using all-fiber components, which has the capability of QKD at a reasonable rate up to a distance of 170 km. This design enables QKD in 100 km long single-mode optical fiber, with a quantum bit error rate (QBER) below 3%, a sifted key rate of 6 kbit⁄s, and a secure key rate of 4.6 kbit⁄s. All the designs and simulations have been done considering the experimental limitations and using physical parameters in harmony with the available tools, so that in case of possible implementation of the system, the results of these simulations are quite close to the experimental data. The development of this scheme can be a suitable candidate for achieving native commercial and industrial QKD systems.
کلیدواژهها [English]
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