Investigation of Weak Measurement in Quantum Key Distribution

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Mohammadi, Shadi | 2022

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 55922 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Alireza Bahrampour
Abstract:
Quantum key distribution is one of the practical quantum information technologies in labo- ratories with existing equipments.In quantum key distribution protocols, the main challenge is the secrecy of key distribution. One of the new methods of quantum channel error esti- mation is the use of weak measurement. In this thesis, after introducing the main quantum key distribution protocols, we introduce weak measurement and sequential weak measure- ment concepts: the weak measurement methods are exployed to obtain the phase difference between two polarizations with high accuratly. It is also used for in line monitoring and error estimation parameters in some quantum key distribution protocols. In this method, unlike conventional methods, all qubits are examined in the error estimation parameters
Keywords:
Quantum Cryptography ; Weak Measurement ; Quantum Key Distribution ; Sequential Weak Measurements ; Quantum Error

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