Entanglement Swapping of Generalized GHZ-like States and its Applications: Semi-quantum Private Comparison and Multi-party Semi-quantum Summation

摘要

This thesis develops some new properties of entanglement swapping of generalized Greenberger–Horne–Zeilinger-like (GHZ-like) states to design secure protocols in the “semi-quantum” environment We first derive the entanglement swapping correlations of generalized Greenberger–Horne–Zeilinger-like states By utilizing the properties of entanglement swapping we propose a semi-quantum private comparison protocol (SQPC) that allows two classical participants to compare the equality of their secret information securely with the help of an almost-dishonest third party (TP) We then extend the SQPC to propose the first multi-party semi-quantum summation protocol (MSQS) which allows three or more classical participants to compute the summation of their secret information securely with the help of an almost-dishonest TP In addition we show that the proposed protocols can be easily converted to other quantum cryptography protocols such as mediated semi-quantum key distribution multi-party semi-quantum secret sharing and controlled deterministic secure semi-quantum communication

獎項日期	2019
原文	English
監督員	Tzone-Lih Hwang (Supervisor)