Results 121 to 130 of about 4,287,757 (400)
Efficient Approximation of Quantum Channel Capacities [PDF]
IEEE Transactions on Information Theory, 2014 We propose an iterative method for approximating the capacity of classical-quantum channels with a discrete input alphabet and a finite-dimensional output under additional constraints on the input distribution.
David Sutter +3 more
semanticscholar +1 more source
The n-shot classical capacity of the quantum erasure channel
Journal of Physics CommunicationsWe compute the n -shot classical capacity of the quantum erasure channel, providing upper bounds and almost-matching lower bounds for it, the latter achievable via large-minimum-distance classical linear codes for any n .
Matteo Rosati
doaj +1 more source
Solving Quantum Channel Discrimination Problem With Quantum Networks and Quantum Neural Networks
IEEE Access, 2019 Distinguishing one quantum channel from another becomes a next natural question following the advent of quantum state discrimination. Here, we address the problem of quantum channel discrimination with the separable states and the entangled states input.
Peng-Hui Qiu +2 more
doaj +1 more source
Describing a Quantum Channel by State Tomography of a Single Probe State
, 2009 A general law is presented for (composite) quantum systems which directly describes the time evolution of quantum states (with one or both components) through an arbitrary noisy quantum channel.
Song, He-shan, Yu, Chang-shui
core +1 more source
Advanced Functional Materials, EarlyView.A metastable high‐vacancy concentration layered P3‐type Na0.5Cr0.5Ti0.5O2 negative electrode material has been synthesized from its K analogues P3‐type K0.5Cr0.5Ti0.5O2 using a facile room temperature ion‐exchange method. The P3‐type Na0.5Cr0.5Ti0.5O2 demonstrates a gravimetric capacity of 125 mA h g−1 and high‐rate performance (80% charging in 3 min ...
Alok K. Pandey +6 more
wiley +1 more source
A simple quantum channel having superadditivity of channel capacity [PDF]
Phys.Lett. A236 (1997) 1, 1997 When classical information is sent through a quantum channel of nonorthogonal states, there is a possibility that transmittable classical information exceeds a channel capacity in a single use of the initial channel by extending it into multi-product channel.
arxiv +1 more source
Classical -Quantum Multiple Access Channel with Secrecy Constraint: One-shot Rate Region
International Journal of Information and Communication Technology Research, 2020 In this paper, we aim to study a -user quantum multiple access wiretap channel with an arbitrary number of wiretappers under one-shot setting. In this regard, we first introduce the general quantum multiple access wiretap channel and the simplified ...
Hadi Aghaee, Bahareh Akhbari
doaj
Universal Superconductivity in FeTe and All‐Iron‐Based Ferromagnetic Superconductor Heterostructures
Advanced Functional Materials, EarlyView.The first all‐iron‐based ferromagnetic superconductor heterostructures with high‐temperature superconductivity and strong ferromagnetism aredemonstrated. From this, it is discovered that FeTe becomes universallysuperconducting with a minute level of cationic impurities through doping ordiffusion from neighboring layers, suggesting its ground state can ...
Hee Taek Yi +12 more
wiley +1 more source
Quantum process tomography of a high-dimensional quantum communication channel [PDF]
Quantum, 2019 The characterization of quantum processes, e.g. communication channels, is an essential ingredient for establishing quantum information systems. For quantum key distribution protocols, the amount of overall noise in the channel determines the rate at ...
Frédéric Bouchard +7 more
doaj +1 more source
, 2020 We derive universal codes for transmission of broadcast and confidential messages over classical-quantum-quantum and fully quantum channels. These codes are robust to channel uncertainties considered in the compound model.
Boche, Holger +2 more
core +1 more source