Implementation of a simplified alogrithm for secure quantum channel authentication /
The quantum authentication process (QAP) in the six states deterministic quantum protocol is complicated by the photon splitting process. Photon splitting of an UV into entangled pair of different IR wavelengths is obtained using second harmonic generation (SGH) phenomena in non-linear crystals such...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
Kuala Lumpur :
Kulliyyah of Engineering, International Islamic University Malaysia,
2015
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| Subjects: | |
| Online Access: | http://studentrepo.iium.edu.my/handle/123456789/4874 |
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| Summary: | The quantum authentication process (QAP) in the six states deterministic quantum protocol is complicated by the photon splitting process. Photon splitting of an UV into entangled pair of different IR wavelengths is obtained using second harmonic generation (SGH) phenomena in non-linear crystals such as BBO3. The process is rather tedious and complicated. In this research project, a simplified method is proposed, that depends on the use of a single wavelength in the visible range. The entangled pairs although of the same wavelength, they are differently polarized by a polarizing beam splitter. The preparation of the quantum states is achieved by λ/4 and λ/2 retardation wave-plates. Bob station then transmits to Alice a sequence of random pulses via a quantum channel within a secret time interval, as determined by the microcontroller, that also sets the polarization and wave-plate angles as well as the time intervals. The coincidence measurements show a flipped state intensity response of 2.41 to 3.64 W/m2 to the initially prepared states travelling via a 1-m FSO channel for random time intervals of 40 and 100 seconds specified by the Arduino microcontroller board. MATLAB code is used to generate real time plots of the coincidence measurements. The intensity response is an indicator of valid correlation between prepared and received states as it does not drop below 40% that eventually, after two more coincidence measurements, achieves authentication. Single photon count modules may be used for more accurate photon response recording and, hence, a higher correlation limit can be specified. |
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| Item Description: | Abstracts in English and Arabic. "A dissertation submitted in fulfilment of the requirement for the degree of Master of Science in Communication Engineering." --On t. p. |
| Physical Description: | xv, 75 leaves : ill. ; 30cm. |
| Bibliography: | Includes bibliographical references (leaves 66-68). |