以基於循環矩陣之辛轉換建構同調脈衝位置調變式量子密碼及其效能分析

• Main Authors: Tsai, Chung Hsien, 蔡宗憲
• Other Authors: Lu, Chung Chin
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/09213669698990816931

碩士 === 國立清華大學 === 電機工程學系 === 99 === In this thesis, we propose a systematic method to generate a set of unitary matrices that is corresponding to a generator of the CPPM signals. A unitary matrix composed of the eigenvectors of a circulant matrix is considered as the seed matrix. A set of unitary matrices can be obtained by applying column rightward and row downward shifting to the seed matrix. The performance of the legitimate receiver and the eavesdropper is compared when the length of signal is 4. Besides, the optical circuit of the proposed generator of the CPPM signals is implemented by the combinations of beam splitters, phase shifters and mirrors.