Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Oskouei, Samad Khabbazi"'
We study the possibility of discriminating between two bosonic dephasing quantum channels. We show that unambiguous discrimination is not realizable. We then consider discrimination with nonzero error probability and minimize this latter in the absen
Externí odkaz:
http://arxiv.org/abs/2407.14935
Publikováno v:
Quantum Inf Process 23, 258 (2024)
We consider discrete time feedback aimed at reclaiming quantum information after a channel action. We compare Bayesian and Markovian strategies. We show that the former does not offer any advantage for qubit channels, while its superior performance c
Externí odkaz:
http://arxiv.org/abs/2402.18941
Publikováno v:
Proc. R. Soc. A 479: 20220796 (2023)
We investigate the usefulness of side entanglement in discriminating between two generic qubit channels, {\ up to unitary pre- and post-processing,} and determine exact conditions under which it does enhance (as well as conditions under which it does
Externí odkaz:
http://arxiv.org/abs/2211.15108
Publikováno v:
Physical Review A, vol. 107, no. 6, page 062603, June 2023
Continuous-variable (CV) teleportation is a foundational protocol in quantum information science. A number of experiments have been designed to simulate ideal teleportation under realistic conditions. In this paper, we detail an analytical approach f
Externí odkaz:
http://arxiv.org/abs/2210.05007
Publikováno v:
IEEE Transactions on Information Theory, vol. 68, no. 1, pp. 339-358, Jan. 2022
Passive environment assisted communication takes place via a quantum channel modeled as a unitary interaction between the information carrying system and an environment, where the latter is controlled by a passive helper, who can set its initial stat
Externí odkaz:
http://arxiv.org/abs/2101.00602
Publikováno v:
Reviews in Mathematical Physics Vol. 33 (2021) 2150012
We study quantum channels that vary on time in a deterministic way, that is, they change in an independent but not identical way from one to another use. We derive coding theorems for the classical entanglement assisted and unassisted capacities. We
Externí odkaz:
http://arxiv.org/abs/2005.12010
Publikováno v:
Proceedings of the Royal Society A, vol. 475, no. 2221, id 20180612, January 2019
In this paper, we prove a quantum union bound that is relevant when performing a sequence of binary-outcome quantum measurements on a quantum state. The quantum union bound proved here involves a tunable parameter that can be optimized, and this tuna
Externí odkaz:
http://arxiv.org/abs/1804.08144
Publikováno v:
Open Syst. Inf. Dyn. 24, 1750005 (2017)
We study the relations between the recently proposed machine-independent quantum complexity of P. Gacs~\cite{Gacs} and the entropy of classical and quantum systems. On one hand, by restricting Gacs complexity to ergodic classical dynamical systems, w
Externí odkaz:
http://arxiv.org/abs/1705.09449
Publikováno v:
Quantum Inf Process (2018) 17, 94 (2018)
Recently the theory of communication developed by Shannon has been extended to the quantum realm by exploiting the rules of quantum theory. This latter stems on complex vector spaces. However complex (as well as real) numbers are just idealizations a
Externí odkaz:
http://arxiv.org/abs/1608.07730
Autor:
Oskouei, Samad Khabbazi
We extend the notion of Gacs quantum algorithmic entropy, originally formulated for finitely many qubits, to infinite dimensional quantum spin chains and investigate the relation of this extension with two quantum dynamical entropies that have been p
Externí odkaz:
http://arxiv.org/abs/1511.00635