4 papers
Optimal Hamiltonian for a quantum state with finite entropy
M. E. Shirokov
We consider the following task: how for a given quantum state to find a grounded Hamiltonian satisfying the condition in such a way that…
Upper bounds on the Holevo quantity arising from the fundamental entropic inequality
M. E. Shirokov
We show how the fundamental entropic inequality proved recently in [arXiv:2408.15306] can be applied to obtain a useful relation for the Holevo quantity of discrete and continuous…
The Alicki-Fannes-Winter technique in the quasi-classical settings: advanced version and its applications
M. E. Shirokov
We describe an advanced version of the AFW-technique proposed in [Lett. Math. Phys., 113, 121 (2023)],[Lobachevskii J. Math., 44(6), 2169 (2023)] which allows us to obtain lower se…
Optimal continuity bound for the von Neumann entropy under energy constraints
S. Becker, N. Datta, M. G. Jabbour +1
Using techniques proposed in [Sason, IEEE Trans. Inf. Th. 59, 7118 (2013)] and [Becker, Datta and Jabbour, IEEE Trans. Inf. Th. 69, 4128 (2023)], and based on the results from the…