Quantum networks

Distributing information with minimal errors between several parties (nodes) situated in distant locations remains a challenging problem both in the classical and quantum domains. In recent times, research in quantum networks have been proven useful in several areas crucial for quantum information processing, such as secure communication, exponential gains in communication complexity, and distributed quantum computing. It has also been established that multipartite entanglement can be a key ingredient in most of the quantum information processing tasks in quantum networks involving multiple parties. It is, therefore, important to generate multipartite entangled state via appropriate quantum operations from entangled states having lesser number of parties, which is a major area of our research. Towards this, we broadly investigate two methodologies: (1) probabilistic creation of genuine multiparty entangled states using either projective, or unsharp, or POV measurements, and (2) deterministic process involving unitary operations.