Towards a quantum internet

Owing to advancements in quantum computing technologies, classically encrypted information can be quickly decrypted in the foreseeable future, posing a challenge to information security. The realization of quantum networks will be needed to ensure the security of information transfer, through the us...

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Bibliographic Details
Main Author: Chong, Geraldine Kah Min
Other Authors: Koh Teck Seng
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2021
Subjects:
Online Access:https://hdl.handle.net/10356/148236
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Institution: Nanyang Technological University
Language: English
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Summary:Owing to advancements in quantum computing technologies, classically encrypted information can be quickly decrypted in the foreseeable future, posing a challenge to information security. The realization of quantum networks will be needed to ensure the security of information transfer, through the use of quantum cryptography. In order to overcome losses and to increase the range of quantum networks, quantum repeaters will be required. Quantum repeaters extend the transmission distance of quantum information by performing entanglement swapping, a fidelity-reducing operation. As such, entanglement distillation is key in restoring the fidelity of entangled states and in building a practical, working quantum network. In this thesis, we studied the proposed architecture of a quantum network and discussed the quantum mechanics behind it. We also simulated an experimental entanglement distillation protocol and explored the relationship between its probability of success and output state fidelity.