Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/146939
Title: TOWARDS A SPACE-BASED QUANTUM KEY DISTRIBUTION NETWORK: DEVELOPING A MINIATURIZED POLARISATION ENTANGLED PHOTON PAIR SOURCE FOR NANOSATELLITE
Authors: TANG ZHONGKAN KAMIYUKI XAVIER
Keywords: SPDC, quantum optics, nanosatellite, QKD
Issue Date: 18-May-2018
Citation: TANG ZHONGKAN KAMIYUKI XAVIER (2018-05-18). TOWARDS A SPACE-BASED QUANTUM KEY DISTRIBUTION NETWORK: DEVELOPING A MINIATURIZED POLARISATION ENTANGLED PHOTON PAIR SOURCE FOR NANOSATELLITE. ScholarBank@NUS Repository.
Abstract: Quantum key distribution (QKD) based on entangled photon pairs provides provable security underpinned by quantum physics. Current QKD networks have distance limits due to loses and satellite technology can be used to extend this network. We propose an iterative and cost effective approach to this challenge using an emerging Nanosatellite standard called CubeSat. The first step towards this direction is to demonstrate a miniaturised polarisation entangled photon pair source that is compatible with the resource-limited CubeSat. This thesis presents the development of such a source based on type I spontaneous parametric downconversion (SPDC). The initial prototype of the source was tested on a weather balloon 35.5 km in altitude. Subsequently, we have tested the revised prototype in two space missions (GomX-2 and Galassia-NUS). These results establish space heritage for the components used and provide insights to refine the design leading to a space qualified QKD source.
URI: http://scholarbank.nus.edu.sg/handle/10635/146939
Appears in Collections:Ph.D Theses (Open)

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