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Finite Phase Space,Wigner Functions,and Tomography for Two-Qubit States |
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| Authors: | Peter Adam Vladimir A Andreev Iulia Ghiu Aurelian Isar Margarita A Man’ko Vladimir I Man’ko |
| Institution: | 1. Institute for Solid State Physics and Optics Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525, Budapest, P.O. Box 49, Hungary 2. P. N. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii Prospect 53, Moscow, 119991, Russia 3. Centre for Advanced Quantum Physics Department of Physics, University of Bucharest, P.O. Box MG-11, R-077125, Bucharest-M?agurele, Romania 4. Horia Hulubei National Institute for Research and Development in Physics and Nuclear Engineering, P.O. Box MG-6, Bucharest-M?agurele, Romania |
| Abstract: | We discuss the Wigner functions and tomographic probability distributions of two-qubit states. We give the kernel of the map, which provides the expression of the state tomogram in terms of the Wigner function of the two-qubit state, in an explicit form. Also we obtain the kernel of the inverse map and elucidate the connection of the constructed maps with the star-product scheme of quantization. |
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