Applied Mathematics & Information Sciences

3(1) (2009), 1–12
— An International Journal  
© 2009 Dixie W Publishing Corporation, U. S. A.  
 
Optimal Protocol for Polarization Ququart State Tomography
 
E. V. Moreva1, Yu. I. Bogdanov2, A. K. Gavrichenko2, I. V. Tikhonov3, and S. P. Kulik3
1Moscow Engineering Physics Institute (State University)
Email Address: ekaterina.moreva@gmail.com
2Institute of Physics and Technology, Russian Academy of Science
3Faculty of Physics, Moscow State University, 119992, Moscow, Russia
 

We develop a practical quantum tomography protocol and implement measurements of pure states of ququarts realized with polarization states of photon pairs (biphotons). The method is based on an optimal choice of the measuring scheme’s parameters that provides better quality of reconstruction for the fixed set of statistical data. A high accuracy of the state reconstruction (above 0.99) indicates that developed methodology is adequate.
 

Keywords: Quantum tomography, biphotons, polarization ququart.

 

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