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The bellow is colloquium schedule in Physics department. Every Wednesday 4:00 PM, colloquium is held in seminar room (Science Building III -201) Also, Free tea time will be held 30 minutes before colloquium stars. Please visit and enjoy the colloquium and tea time.


Colloquium 장소 및 시간: 세미나실(공학3동 201호) 오후 4시
연락처 : 물리학과 김지훈교수 (279-2077), jeehoon@postech.ac.kr

          물리학과 사무실 김수경 (279-5971) skyung@postech.ac.kr

Entanglement and topological order in 1D and 2D systems

speaker : Wonmin Son[Sogang University]

location :

date : 2013-9-25

Abstract: In this talk, we discuss about the possible definition of quantum topological order and its relationship with quantum entanglement. In showing the character of the particular quantum phase, we use the particular examples of 1D and 2D exactly soluble models, including XX-model, 1D and 2D cluster state, Kitaev toric code model and Wen’s model. Through the complete analytic solution of the systems and the structure of total eigenstates, we clarify the vaguely existing notion of quantum phase transition and topological order as well as the implication of their use for quantum computation.