The thesis showcases the importance of tomograms in quantifying nonclassical effects such as wavepacket revivals, squeezing, and quantum entanglement in continuous-variable, hybrid quantum, and qubit systems. This approach avoids error-prone statistical methods used in state reconstruction procedures. The performance of many bipartite entanglement indicators obtained directly from tomograms is examined both in the case of known quantum states and experimental data reported in the literature.
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