Abstract
We study the qudit state with spin j = 3/2 and the density matrix of the form corresponding to the X state of two qubits and consider the entanglement and separability properties. We use the qubit portrait of qudit states to obtain the entropic inequalities for the entangled state of a single qudit. We present the tomographic-probability representation of the qudit X-state and obtain the Shannon and q entropic characteristics in explicit forms.
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Man’ko, V.I., Markovich, L.A. Separability and Entanglement of the Qudit X-State with j = 3/2. J Russ Laser Res 35, 518–524 (2014). https://doi.org/10.1007/s10946-014-9455-y
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DOI: https://doi.org/10.1007/s10946-014-9455-y