Study of quantum correlations, including quantum entanglement and quantum discord.
Effect of decoherence on Quantum Entanglement and related phenomenon, i.e., Entanglement Sudden Death (ESD).
Schemes to protect entanglement from undergoing ESD in the presence of a noisy environment for two-qubit and higher-dimensional systems.
Experimental preparation and characterization of Spontaneous Parametric Down-Conversion (SPDC) based heralded single-, and polarization-entangled photon sources.
Experimental time-bin and time-energy entanglement, and GHZ-state generation and characterization.
Experimental creation, characterization and manipulation of quantum entanglement.
Quantum Memories and Networks.
Discrete-variable quantum key distribution using non-classical light sources.