Experimental Characterization of a Discrete Gaussian-modulated Quantum Key Distribution System
Quantum Key Distribution
AdvisorKilper, Dan C.
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PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction, presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractQuantum Key Distribution (QKD) utilizes the laws of quantum mechanics to enable a verifiably secure distribution of cryptographic key material between distant parties. When properly implemented alongside a one-time pad encryption scheme, QKD can provide unconditional security which is not possible with modern cryptographic systems. One of the most common QKD protocols, the Gaussian-modulated coherent state (GMCS) protocol can never be truly realized due to the stringent requirements of a true Gaussian modulation. This thesis outlines a method for testing a discrete Gaussian-modulated (DGM) QKD protocol which accounts for the discrete nature of its practical implementation. A proof-of-principle experiment for measuring its performance is presented, and a field programmable gate array (FPGA) controlled phase compensation system is designed for practical implementations.
Degree ProgramGraduate College