Multi-party quantum key agreement with bell states and bell measurements

  • Authors:
  • Run-Hua Shi;Hong Zhong

  • Affiliations:
  • Key Laboratory of Intelligent Computing & Signal Processing of Ministry of Education, Anhui University, Hefei, China 230039 and School of Computer Science and Technology, Anhui University, Hefei, ...;Key Laboratory of Intelligent Computing & Signal Processing of Ministry of Education, Anhui University, Hefei, China 230039 and School of Computer Science and Technology, Anhui University, Hefei, ...

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

Quantum key agreement protocol is a key establishment technique whereby a classical shared secret key is derived by two or more specified parties equally and fairly based on quantum mechanics principles. In this paper, we presented two novel quantum key agreement protocols for two parties and more parties based on entanglement swapping. The proposed protocols utilize Bell states as the quantum resources, and further perform Bell measurements as the main operations. In addition, they don't require the help of a trusted center or third party, but could ensure fairness, security and efficiency.