Random number generation based on single-photon detectors

In quantum cryptography, random number generators play a crucial role in the quantum key distribution system. Only truly random numbers can be used as secured keys for encoding of information. This project makes use of the comparison of photon arrival times at a detector, accompanied with the Toepli...

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Bibliographic Details
Main Author: Hong, Dominick.
Other Authors: School of Electrical and Electronic Engineering
Format: Final Year Project
Language:English
Published: 2013
Subjects:
Online Access:http://hdl.handle.net/10356/53343
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Institution: Nanyang Technological University
Language: English
Description
Summary:In quantum cryptography, random number generators play a crucial role in the quantum key distribution system. Only truly random numbers can be used as secured keys for encoding of information. This project makes use of the comparison of photon arrival times at a detector, accompanied with the Toeplitz hashing algorithm to generate random bits. Apart from this, a new model to characterize afterpulsing probability was formulated. This has shed light on the main concerns faced when dealing with photo-detectors as well as the reasons that has caused non-randomness to the random number generator.