Title :
Characterization of mean photon number for key distribution system using faint laser
Author :
Al-Kathiri, Salim ; Al-Khateeb, Wajdi ; Hafizulfika, Mohd ; Wahiddin, Mohamed Ridza ; Saharudin, Suhairi
Author_Institution :
Dept. of Comput. & Inf. Eng., Int. Islamic Univ. Malaysia, Kuala Lumpur
Abstract :
Key distribution system using faint laser is very likely to become the first application exploiting the particular properties of single quanta called photons. In experimental key distribution system, it is highly demanded to use single-photon source for secure key distribution. Since there is not yet a laser source capable of producing such faint state, most experiments uses low coherent pulse laser, which is attenuated to produce a mean photon number mu. In this paper, we present an experimental setup to determine the mean photon number using a 300-ps low coherent pulse laser at 1550 nm for a practical crypto system. We will also present the effect of trigger frequency, detection efficiency and dark counts on average photon counts.
Keywords :
laser beam applications; quantum cryptography; average photon counts; detection efficiency; faint laser; key distribution system; low coherent pulse laser; mean photon number; practical crypto system; secure key distribution; single-photon source; trigger frequency effect; Cryptography; Distributed computing; Information security; Optical computing; Optical fiber polarization; Optical fibers; Optical pulse generation; Optical pulses; Quantum mechanics; Semiconductor lasers;
Conference_Titel :
Computer and Communication Engineering, 2008. ICCCE 2008. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-1691-2
Electronic_ISBN :
978-1-4244-1692-9
DOI :
10.1109/ICCCE.2008.4580803
