Two-qubit weak-measurement reversal protects quantum correlations better than single-qubit reversal under correlated amplitude damping, and a MATLAB neural network can interpolate trace distance discord from other correlation measures.
Creation, Characterization, and Manipulation of Quantum Entanglement in a Photonic System
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In this thesis, we report the theoretical and experimental investigations towards the creation, characterization, and manipulation of quantum entanglement in a photonic system. We examine two different aspects of quantum entanglement: In the first part, we discuss the experimental method for the preparation and characterization of SPDC-based polarization-entangled photon source. We provide a review study comparing different Entanglement Measures for non-maximally entangled two-qubit pure states and extend this analysis to higher-dimensional systems. In the second part, we study the entanglement dynamics of a two-qubit system in the presence of an Amplitude Damping Channel and present a scheme based on local unitary operations to protect entanglement from undergoing Entanglement Sudden Death. We extend the decoherence study to qubit-qutrit and qutrit-qutrit entangled systems and propose an entanglement protection scheme for the higher dimensional system.
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Effect of Weak Measurement Reversal on Quantum Correlations in a Correlated Amplitude Damping Channel, with a Neural Network Perspective
Two-qubit weak-measurement reversal protects quantum correlations better than single-qubit reversal under correlated amplitude damping, and a MATLAB neural network can interpolate trace distance discord from other correlation measures.