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Unitary and Nonunitary Evolution of Qubit States in Probability Representation of Quantum Mechanics |
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| Authors: | Avanesov A. S. Manko V. I. |
| Affiliation: | 1.Department of General and Applied Physics, Moscow Institute of Physics and Technology (State University) Institutskii per. 9, Dolgoprudnyi, Moscow Region, 141700, Russia ;2.Lebedev Physical Institute, Russian Academy of Sciences, Leninskii Prospect 53, Moscow, 119991, Russia ;3.Department of Physics, Tomsk State University, Lenin Avenue 36, Tomsk, 634050, Russia ; |
| Abstract: | Review of the probability representation of qubit states and observables is presented as well as the picture of states of two-level systems in terms of Triada of Malevich’s squares. A new relation of introduced probability parameters is obtained. Also, it is offered a method to visualize the quantum channel’s maps of qubit states. Evolution of the two-level system is considered in terms of Triada of Malevich’s squares in case of Rabi and Demkov models. |
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