Print Email Facebook Twitter A boolean QPQ using single photons Title A boolean QPQ using single photons Author Nagtegaal, M.A. Contributor Blaauboer, M. (mentor) Visser, P.M. (mentor) Faculty Applied Sciences Department Kavli Institute of Nanoscience Delft Programme Applied Physics and Applied Mathematics Date 2015-06-26 Abstract I propose an implementation of the quantum private query protocol as described in an article using a photon to encode a question and reflectionor transmission of the photon as answer options. Each question is represented by a photon in a transmission line with both ends returning to the user, and the answer is represented by reflection or transmission of this photon caused by the single photon transistor as described in another article. By solving the quantum Langevin equations for the 32 × 32-dimensional operators describing the single photon transistor the system is analysed. This analysis shows that the user privacy is maintained when the returning transmission lines are under the user's control. The probabilities for reflection and transmission are calculated to verify the behaviour of the answering mechanism. By using pulse trains instead of numbered lines to represent questions, the scalability of the system could be improved. Subject QuantumPrivateQueryLangevinQPQPrivacy To reference this document use: http://resolver.tudelft.nl/uuid:b935faeb-a8a4-4c23-888b-1ebf9b8b9eca Part of collection Student theses Document type bachelor thesis Rights (c) 2015 Nagtegaal, M.A. Files PDF A_boolean_QPQ_using_singl ... hotons.pdf 1.31 MB Close viewer /islandora/object/uuid:b935faeb-a8a4-4c23-888b-1ebf9b8b9eca/datastream/OBJ/view