Results 141 to 150 of about 4,287,757 (400)
Capacities of classical compound quantum wiretap and classical quantum compound wiretap channels [PDF]
arXiv, 2012 We determine the capacity of the classical compound quantum wiretapper channel with channel state information at the transmitter. Moreover we derive a lower bound on the capacity of this channel without channel state information and determine the capacity of the classical quantum compound wiretap channel with channel state information at the ...
arxiv
Tomographic Portrait of Quantum Channels [PDF]
Reports on Mathematical Physics, 2018 15 pages, accepted for publication in Reports on Mathematical ...
Vladimir I. Man’ko +3 more
openaire +3 more sources
Enhancing pseudo-telepathy in the magic square game. [PDF]
PLoS ONE, 2013 We study the possibility of reversing an action of a quantum channel. Our principal objective is to find a specific channel that reverses as accurately as possible an action of a given quantum channel. To achieve this goal we use semidefinite programming.
Lukasz Pawela +3 more
doaj +1 more source
Nonperturbative approach to relativistic quantum communication channels
, 2016 We investigate the transmission of both classical and quantum information between two arbitrary observers in globally hyperbolic spacetimes using a quantum field as a communication channel.
Landulfo, Andre G. S.
core +1 more source
, 2002 One of the most challenging open problems in quantum information theory is to clarify and quantify how entanglement behaves when part of an entangled state is sent through a quantum channel. Of central importance in the description of a quantum channel or completely positive map (CP-map) is the dual state associated to it.
Verstraete, Frank, Verschelde, Henri
openaire +2 more sources
Advanced Functional Materials, EarlyView.This review covers the recent advances in the synthesis and properties of stable radical polymers (SRPs) and presents their applications in electronics, magnetics, optoelectronics, and biomedicines. The review concludes with a discussion of the challenges in radical chemistry and functionalization, while shedding light on the groundbreaking potential ...
Yufeng Xiong +11 more
wiley +1 more source
Hybrid Quantum Noise Model to Compute Gaussian Quantum Channel Capacity
IEEE AccessQuantum information processing leverages the principles of quantum mechanics, utilizing qubits, to improve computational and communicative tasks. In this realm, the quantum channel’s capacity is pivotal in determining the efficiency and accuracy ...
Mouli Chakraborty +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.The developed all‐organic solar cells achieve a power conversion efficiency of 8.7%, more than double the previous record. In addition, bioplastic substrates are used to produce environmentally friendly solar cells with an efficiency of 8.6%. These results are achieved by developing high‐performance organic electrodes without acid doping or high ...
Keiju Hashida +12 more
wiley +1 more source
Optimal working points for continuous-variable quantum channels
, 2013 The most important ability of a quantum channel is to preserve the quantum properties of transmitted quantum states. We experimentally demonstrate a continuous-variable system for efficient benchmarking of quantum channels.
Jain, Nitin +6 more
core +1 more source
Mixing doubly stochastic quantum channels with the completely depolarizing channel [PDF]
arXiv, 2008 It is proved that every doubly stochastic quantum channel that is properly averaged with the completely depolarizing channel can be written as a convex combination of unitary channels. As a consequence, we find that the collection of channels expressible as convex combinations of unitary channels has non-zero Borel measure within the space of doubly ...
arxiv