Next Article in Journal
On the Logic of a Prior Based Statistical Mechanics of Polydisperse Systems: The Case of Binary Mixtures
Previous Article in Journal
Analytical Solutions of Fractional-Order Heat and Wave Equations by the Natural Transform Decomposition Method
Previous Article in Special Issue
Quantum Probes for Ohmic Environments at Thermal Equilibrium
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle

Enhanced Superdense Coding over Correlated Amplitude Damping Channel

School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
College of Physics and Electronic Information, Gannan Normal University, Ganzhou 341000, China
Author to whom correspondence should be addressed.
Entropy 2019, 21(6), 598;
Received: 30 April 2019 / Revised: 9 June 2019 / Accepted: 13 June 2019 / Published: 16 June 2019
(This article belongs to the Special Issue Open Quantum Systems (OQS) for Quantum Technologies)
PDF [2002 KB, uploaded 24 June 2019]


Quantum channels with correlated effects are realistic scenarios for the study of noisy quantum communication when the channels are consecutively used. In this paper, superdense coding is reexamined under a correlated amplitude damping (CAD) channel. Two techniques named as weak measurement and environment-assisted measurement are utilized to enhance the capacity of superdense coding. The results show that both of them enable us to battle against the CAD decoherence and improve the capacity with a certain probability. Remarkably, the scheme of environment-assisted measurement always outperforms the scheme of weak measurement in both improving the capacity and successful probability. These notable superiorities could be attributed to the fact that environment-assisted measurement can extract additional information from the environment and thus it performs much better. View Full-Text
Keywords: superdense coding; correlated amplitude damping channel; weak measurement; environment-assisted measurement superdense coding; correlated amplitude damping channel; weak measurement; environment-assisted measurement

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Li, Y.-L.; Wei, D.-M.; Zu, C.-J.; Xiao, X. Enhanced Superdense Coding over Correlated Amplitude Damping Channel. Entropy 2019, 21, 598.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top