Quantum Information Theory

Researchers make progress on quantum dense coding with locality constraints on decoder featured image

Researchers make progress on quantum dense coding with locality constraints on decoder

The researchers explored the practicality of dense coding by elaborating 21 classes of dense coding capacities with different encoder-decoder pairs, where the encoders are …

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Kun WANG
Dense Coding with Locality Restriction on Decoders: Quantum Encoders versus Superquantum Encoders featured image

Dense Coding with Locality Restriction on Decoders: Quantum Encoders versus Superquantum Encoders

We investigate practical dense coding by imposing locality restrictions on decoders and symmetry restrictions on encoders within the resource theory of asymmetry framework. In this …

masahito-hayashi

Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Extraction

We give the first systematic study on the second order asymptotics of the operational task of coherence distillation with and without assistance. In the unassisted setting, we …

masahito-hayashi
Permutation Enhances Classical Communication Assisted by Entangled States featured image

Permutation Enhances Classical Communication Assisted by Entangled States

We study classical communication over a noisy quantum channel when bipartite states are preshared between the sender and the receiver, and one of the following encoding strategies …

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Kun WANG

Quantification of Unextendible Entanglement and Its Applications in Entanglement Distillation

The unextendibility or monogamy of entangled states is a key property of quantum entanglement. Unlike conventional ways of expressing entanglement monogamy via entanglement measure …

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Kun WANG
New Research on the Resource Theory of Quantum Channels featured image

New Research on the Resource Theory of Quantum Channels

Recent research by a team at Southern University of Science and Technology (SUSTech) introduced a new resource theory of quantum channels and applied it to study communication over …

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Kun WANG

Entanglement Detection via Direct-Sum Majorization Uncertainty Relations

In this paper we investigate the relationship between direct-sum majorization formulation of uncertainty relations and entanglement, for the case of two observables. Our primary …

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Kun WANG