Three Dimensional Visualization of Qutrit States
  The qutrit comes next in complexity after qubit as a resource for quantum information processing. The qubit density matrix can be easily visualized using Bloch sphere representation of its states. In contrast, this simplicity is in general unavailable for the 8-dimensional state space of a qutrit. In this work a new way to visualize them in a 3-dimensional Cartesian space is presented and compared with earlier similar efforts. 
Vinod K. Mishra
quant-ph math-ph math.MP