發送短信 : Minimal tomography with entanglement witnesses

            ______   __   __     ___      ______  
    ___    /_   _//  \ \\/ //   / _ \\   /_   _// 
   /   ||   -| ||-    \   //   | / \ ||  `-| |,-  
  | [] ||   _| ||_    / . \\   | \_/ ||    | ||   
   \__ ||  /_____//  /_//\_\\   \___//     |_||   
    -|_||  `-----`   `-`  --`   `---`      `-`'   
     `-`