Bounding the quantum capacity with flagged extensions

F Kianvash, M Fanizza, V Giovannetti - Quantum, 2022 - quantum-journal.org
In this article we consider flagged extensions of convex combination of quantum channels,
and find general sufficient conditions for the degradability of the flagged extension. An …

Capacity of trace decreasing quantum operations and superadditivity of coherent information for a generalized erasure channel

SN Filippov - Journal of Physics A: Mathematical and Theoretical, 2021 - iopscience.iop.org
Losses in quantum communication lines severely affect the rates of reliable information
transmission and are usually considered to be state-independent. However, the loss …

Leaking information to gain entanglement

V Siddhu - arxiv preprint arxiv:2011.15116, 2020 - arxiv.org
Entanglement lies at the root of quantum theory. It is a remarkable resource that is generally
believed to diminish when entangled systems interact with their environment. On the …

Exploring superadditivity of coherent information of noisy quantum channels through genetic algorithms

GL Sidhardh, M Alimuddin, M Banik - Physical Review A, 2022 - APS
Machine learning techniques are increasingly being used in fundamental research to solve
various challenging problems. Here we explore one such technique to address an important …

Local-Data-Hiding and Causal Inseparability: Probing Indefinite Causal Structures with Cryptographic Primitives

SG Naik, S Sen, RK Patra, A Chakraborty… - arxiv preprint arxiv …, 2024 - arxiv.org
Formulation of physical theories typically assumes a definite causal structure--either static or
dynamic--among the set of physical events. Recent studies, however, suggest the possibility …

Noise is resource-contextual in quantum communication

A Nema, AG Maity, S Strelchuk, D Elkouss - Physical Review Research, 2024 - APS
Estimating the information transmission capability of a quantum channel remains one of the
fundamental problems in quantum information processing. In contrast to classical channels …

[PDF][PDF] Quantum Information Capacities for Networks and Higher Dimensional Channels

S Chessa - 2022 - ricerca.sns.it
Quantum Information Capacities for Networks and Higher Dimensional Channels Page 1
Quantum Information Capacities for Networks and Higher Dimensional Channels PhD …

Multipartite entanglement to boost superadditivity of coherent information in quantum communication lines with polarization-dependent losses

SN Filippov - Physical Review A, 2022 - APS
Coherent information quantifies the achievable rate of the reliable quantum information
transmission through a communication channel. Use of the correlated quantum states …

Applications of Quantum Information: From Black Hole Geometries to Gaussian Error Channels

S Agrawal - 2024 - search.proquest.com
Quantum information theory explores how quantum systems can be used to process and
transmit information. Unlike classical information theory, which deals with bits, quantum …

Quantum communication with side infromation

F Kianvash - 2023 - ricerca.sns.it
Quantum communication capacities refer to the maximum amount of quantum information
that can be reliably transmitted through a noisy communication channel. However …