Entanglement and Berry phase in a 9 × 9 Yang---Baxter system

  • Authors:
  • Chunfang Sun;Kang Xue;Gangcheng Wang

  • Affiliations:
  • School of Physics, Northeast Normal University, Changchun, People's Republic of China 130024;School of Physics, Northeast Normal University, Changchun, People's Republic of China 130024;School of Physics, Northeast Normal University, Changchun, People's Republic of China 130024

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2009

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Abstract

A M-matrix which satisfies the Hecke algebraic relations is presented. Via the Yang---Baxterization approach, we obtain a unitary solution $${\breve{R}(\theta,\varphi_{1},\varphi_{2})}$$ of Yang---Baxter equation. It is shown that any pure two-qutrit entangled states can be generated via the universal $${\breve{R}}$$ -matrix assisted by local unitary transformations. A Hamiltonian is constructed from the $${\breve{R}}$$ -matrix, and Berry phase of the Yang---Baxter system is investigated. Specifically, for $${\varphi_{1}\,{=}\,\varphi_{2}}$$ , the Hamiltonian can be represented based on three sets of SU(2) operators, and three oscillator Hamiltonians can be obtained. Under this framework, the Berry phase can be interpreted.