Research

The use of entangled resources to achieve efficient and optimal success in quantum information and communication, in comparison to classical resources, is based on quantum correlations existing between the particles. The existence of such long range correlations in quantum systems with no classical analogues thus distinguishes the quantum world from its classical counterparts. Moreover, quantum correlations not only shed light on the complex nature of entanglement but also provide physical insights to quantum computing and quantum communication protocols like teleportation, superdense coding, cryptography, etc. Recent studies in quantum information have shown that the relationship between non-classicality and correlations is not limited to entangled systems only but can also be extended to some separable systems which further makes the basis for such separable quantum systems to be used as resources to accomplish information processing tasks which cannot be achieved classically. We analyze correlations, entanglement and nonlocality for diverse applications in quantum information, communication, security and computing. Our group at IIT Jodhpur is interested in analyzing classical and quantum correlations and its relation to multiqubit entanglement and nonlocality. The relationship between non locality, entanglement, discord and their use in quantum information and communication is of particular interest. Furthermore, we are also working towards understanding the security of communication protocols based on nonlocal quantum games.

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In particular, our group is interested in the following themes,    

• Foundations of Quantum Mechanics and Quantum Information

• Multiqubit Entanglement and Nonlocality

• Classical and Quantum Correlations

• Quantum Communication Protocols

• Quantum Games