5 papers
Composite Classical and Quantum Channel Discrimination
Bjarne Bergh, Nilanjana Datta, Robert Salzmann
We study the problem of binary composite channel discrimination in the asymmetric setting, where the hypotheses are given by fairly arbitrary sets of channels, and samples do not h…
Decoding quantum information via the Petz recovery map
Salman Beigi, Nilanjana Datta, Felix Leditzky
We obtain a lower bound on the maximum number of qubits, , which can be transmitted over uses of a quantum channel , for a given non-zero e…
From Classical to Quantum: Uniform Continuity Bounds on Entropies in Infinite Dimensions
Simon Becker, Nilanjana Datta, Michael G. Jabbour
We prove a variety of new and refined uniform continuity bounds for entropies of both classical random variables on an infinite state space and of quantum states of infinite-dimens…
Fully undistillable quantum states are separable
Satvik Singh, Nilanjana Datta
Assume that Alice, Bob, and Charlie share a tripartite pure state . We prove that if Alice cannot distill entanglement with either Bob or Charlie using $|Ï_{ABC}…
Detecting positive quantum capacities of quantum channels
Satvik Singh, Nilanjana Datta
Determining whether a noisy quantum channel can be used to reliably transmit quantum information at a non-zero rate is a challenging problem in quantum information theory. This is…