量子纯态的纠缠度

ENTANGEMENT OF QUANTUM PURE STATES

纠缠态在量子计算和量子通讯中起着重要作用 .考虑了量子纯态在时间反演变换下的行为以及相应的密度矩阵在Hilbert Schmidt空间中的表示 。

Entangled state and entanglement have important action in quantum computation and quantum communication.In this paper,we consider the quantum pure state,show its properties when time reversal transformation is used,and study the representation of corresponding density matrix in Hilbert\|Schmidt space.Finally we give a geometrical interpretation for entanglement.