,Simple Linear Optical 'Binary Measurement Tree' for Single Photonic Polarization Qubit

• 作 者: HAN Yang WU Wei WU Chun-Wang CHEN Ping-Xing LI Cheng-Zu
• 机 构: Department of Physics,National University of Defense Technology,Changsha 410073
• 出 处: 中国物理快报（英文版）
• 发表日期: 2009年2期

Positive-operator-value-measurement (POVM) is one of the essential components of quantum information process-ing (QIP). Recently a inary measurement tree (BST) strategy (PRA 77, 052104) is suggested for implementing arbitrary POVM by sequential two-operator POVMs. We present a simple novel two-operator POVM module via linear optics, which is employed as block to construct a inary measurement tree for implementing arbitrary POVM on single photonic polarization qubit. The total complexity of the experimental setup is significantly reduced in contrast to the previous works. As an example, we give the detailed settings of a well-known POVM.