Quantum State Tomography via Reduced Density Matrices

• Published in: Physical review letters Vol. 118; no. 2; p. 020401
• Main Authors: Xin, Tao, Lu, Dawei, Klassen, Joel, Yu, Nengkun, Ji, Zhengfeng, Chen, Jianxin, Ma, Xian, Long, Guilu, Zeng, Bei, Laflamme, Raymond
• Format: Journal Article
• Language: English
• Published: United States 13.01.2017

Quantum state tomography via local measurements is an efficient tool for characterizing quantum states. However, it requires that the original global state be uniquely determined (UD) by its local reduced density matrices (RDMs). In this work, we demonstrate for the first time a class of states that...