Results 11 to 20 of about 2,432,792 (186)
Classical analogue of quantum superdense coding and communication advantage of a single quantum system [PDF]
Quantum, 2022 We analyze utility of communication channels in absence of any short of quantum or classical correlation shared between the sender and the receiver. To this aim, we propose a class of two-party communication games, and show that the games cannot be won ...
Ram Krishna Patra +7 more
doaj +4 more sources
Absolutely Secure Distributed Superdense Coding: Entanglement Requirement for Optimality [PDF]
Physica Scripta, 2021 Abstract Superdense coding uses entanglement as a resource to communicate classical information efficiently through quantum channels. A superdense coding method is optimal when its capacity reaches Holevo bound. We show that for optimality, maximal entanglement is a necessity across the bipartition of Alice and Bob, but neither absolute ...
Sagnik Dutta +2 more
semanticscholar +5 more sources
Realizing ultrahigh capacity quantum superdense coding on quantum photonic chip [PDF]
npj Quantum InformationQuantum superdense coding provides a compelling solution to enhance the channel capacity compared with classical coding, which plays a vital role in quantum networks.
Yuan Li +11 more
doaj +3 more sources
Superdense coding in the resource theory of asymmetry [PDF]
Physical Review A, 2021 We consider a task in which classical information is encoded into a quantum system by an operation restricted by symmetry. The maximum amount of classical information that can be encoded under this restriction, namely the symmetry-restricted classical information capacity, depends on the initial state of the system. Our focus is on whether the capacity
Eyuri Wakakuwa
semanticscholar +6 more sources
Optimal Superdense Coding Capacity in the Non-Markovian Regime [PDF]
Journal of Physics A: Mathematical and TheoreticalAbstract Superdense coding (SDC) is a significant technique widely used in quantum information processing. Indeed, it consists of sending two bits of classical information using a single qubit, leading to faster and more efficient quantum communication. In this paper, we propose a model to evaluate the effect of backflow information in a
Y. Aiache +3 more
semanticscholar +7 more sources
Quantum Two-Way Protocol Beyond Superdense Coding: Joint Transfer of Data and Entanglement [PDF]
IEEE Transactions on Quantum Engineering, 2023 In this article, we introduce a generalization of one-way superdense coding to two-way communication protocols for transmitting classical bits by using entangled quantum pairs.
Kristian S. Jensen +4 more
doaj +3 more sources
Quantum key secure communication protocol via enhanced superdense coding [PDF]
Optical and Quantum Electronics, 2020 Abstract In the last decades, Quantum Cryptography has become one of the most important branches of Quantum Communications with a particular projection over the future Quantum Internet. It is precisely in Quantum Cryptography where two techniques stand out above all others: Quantum key Distribution (QKD), and Quantum Secure Direct Communication
Mario Mastriani
semanticscholar +5 more sources
Mutually Unbiased Measurements, Hadamard Matrices, and Superdense Coding [PDF]
IEEE Transactions on Information Theory, 2022 Mutually unbiased bases (MUBs) are highly symmetric bases on complex Hilbert spaces, and the corresponding rank-1 projective measurements are ubiquitous in quantum information theory. In this work, we study a recently introduced generalization of MUBs called mutually unbiased measurements (MUMs).
Máté Farkas +2 more
semanticscholar +5 more sources
Beating the channel capacity limit for superdense coding with entangled ququarts. [PDF]
Sci Adv, 2018 Experimental demonstration of beating the channel capacity limit for superdense coding with high-dimensional entanglement. Quantum superdense coding protocols enhance channel capacity by using shared quantum entanglement between two users.
Hu XM +5 more
europepmc +5 more sources
Entanglement and Superdense Coding with Linear Optics [PDF]
International Journal of Quantum Information, 2011 We discuss a scheme for a full superdense coding of entangled photon states employing only linear-optics elements. By using the mixed basis consisting of four states that are unambiguously distinguishable by a standard and polarizing beam splitters we ...
Boström K. +4 more
core +5 more sources