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quant-ph2025
A maximum concurrence criterion to investigate absolutely maximally entangled states
Subhasish Bag, Ramita Sarkar, Prasanta K. Panigrahi
We propose a straightforward method to determine the maximal entanglement of pure states using the criterion of maximal I-concurrence, a measure of entanglement. The square of conc…
quant-ph2022
Achieving Heisenberg limit in the phase measurement through three-qubit graph states
Subhasish Bag, Ramita Sarkar, Prasanta K. Panigrahi
We study the reciprocal of the mean quantum Fisher information (RMQFI), for general three qubit states, having graph and hypergraph states as special cases, for identifying g…