Jiaojiao Zhang Kezhi Li Shuang Cong Haitao Wang 0004 Efficient reconstruction of density matrices for high dimensional quantum state tomography. 136-142 2017 139 Signal Process. https://doi.org/10.1016/j.sigpro.2017.04.007 db/journals/sigpro/sigpro139.html#ZhangLCW17