108 citations · 241 across the 10 of their papers we have counts for
12 papers
Comment on "Conditional Decoupling of Quantum Information"
Naresh Sharma
Berta et al [Phys. Rev. Lett., 121, 040504 (2018)] claim that their result provides a conceptually new extension of the decoupling approach to quantum information theory. We provid…
More on a trace inequality in quantum information theory
Naresh Sharma
It is known that for a completely positive and trace preserving (cptp) map , $-\log {\cal N}(σ)] \}…
Random coding exponents galore via decoupling
Naresh Sharma
A missing piece in quantum information theory, with very few exceptions, has been to provide the random coding exponents for quantum information-processing protocols. We remedy the…
A strong converse for the quantum state merging protocol
Naresh Sharma
The Polyanskiy-Verdú paradigm provides an elegant way of using generalized-divergences to obtain strong converses and thus far has remained confined to protocols involving channels…
A gambling interpretation of some quantum information-theoretic quantities
Naresh Sharma
It is known that repeated gambling over the outcomes of independent and identically distributed (i.i.d.) random variables gives rise to alternate operational meaning of entropies i…
Fundamental bound on the reliability of quantum information transmission
Naresh Sharma, Naqueeb Ahmad Warsi
Information theory tells us that if the rate of sending information across a noisy channel were above the capacity of that channel, then the transmission would necessarily be unrel…
On the strong converses for the quantum channel capacity theorems
Naresh Sharma, Naqueeb Ahmad Warsi
A unified approach to prove the converses for the quantum channel capacity theorems is presented. These converses include the strong converse theorems for classical or quantum info…
Non-asymptotic information theoretic bound for some multi-party scenarios
Naresh Sharma, Naqueeb Ahmad Warsi
In the last few years, there has been a great interest in extending the information-theoretic scenario for the non-asymptotic or one-shot case, i.e., where the channel is used only…
On some special cases of the Entropy Photon-Number Inequality
Smarajit Das, Naresh Sharma, Siddharth Muthukrishnan
We show that the Entropy Photon-Number Inequality (EPnI) holds where one of the input states is the vacuum state and for several candidates of the other input state that includes t…
Entropy power inequality for a family of discrete random variables
Naresh Sharma, Smarajit Das, Siddharth Muthukrishnan
It is known that the Entropy Power Inequality (EPI) always holds if the random variables have density. Not much work has been done to identify discrete distributions for which the…
On the quantum f-relative entropy and generalized data processing inequalities
Naresh Sharma
We study the fundamental properties of the quantum f-relative entropy, where f(.) is an operator convex function. We give the equality conditions under monotonicity and joint conve…
Extensions of the quantum Fano inequality
Naresh Sharma
Quantum Fano inequality (QFI) in quantum information theory provides an upper bound to the entropy exchange by a function of the entanglement fidelity. We give various Fano-like up…