Communication with quantum catalysts

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Please use this identifier to cite or link to this item: https://oar.a-star.edu.sg/communities-collections/articles/23227

Title:

Communication with quantum catalysts

Journal Title:

Quantum Science and Technology

DOI:

10.1088/2058-9565/ade284

Publication URL:

https://doi.org/10.1088/2058-9565/ade284

Authors:

Yuqi Li, Junjing Xing, Dengke Qu, Lei Xiao, Zhaobing Fan, Zhu-Jun Zheng, Haitao Ma, Peng Xue, Kishor Bharti, Dax Enshan Koh, Yunlong Xiao

Keywords:

Publication Date:

09 June 2025

Citation:

Li, Y., Xing, J., Qu, D., Xiao, L., Fan, Z., Zheng, Z.-J., Ma, H., Xue, P., Bharti, K., Enshan Koh, D., & Xiao, Y. (2025). Communication with quantum catalysts. Quantum Science and Technology, 10(3), 35044. https://doi.org/10.1088/2058-9565/ade284

Abstract:

Communication is essential for advancing science and technology. Quantum communication, in particular, benefits from the use of catalysts. During the communication process, these catalysts enhance performance while remaining unchanged. Although chemical catalysts that undergo deactivation typically perform worse than those that remain unaffected, quantum catalysts, referred to as embezzling catalysts, can surprisingly outperform their non-deactivating counterparts despite experiencing slight alterations. In this work, we employ embezzling quantum catalysts to enhance the transmission of both quantum and classical information. By utilizing finite-dimensional embezzling catalysts, we guarantee a non-zero catalytic channel capacity for any quantum channel while keeping variations in the catalytic system arbitrarily small. Our protocol also improves long-distance entanglement distribution. Furthermore, we introduce catalytic superdense coding, demonstrating how embezzling catalysts can boost the transmission of classical information. Finally, we explore methods to reduce the dimensionality of catalysts, a step toward making quantum catalysis a practical reality.

License type:

Attribution 4.0 International (CC BY 4.0)

Funding Info:

This research / project is supported by the Agency for Science, Technology and Research - Central Research Fund
Grant Reference no. : NA

This research / project is supported by the A*STAR - Career Development Fund
Grant Reference no. : C243512002

Description:

URI:

https://oar.a-star.edu.sg/communities-collections/articles/23227

ISSN:

2058-9565

Collections:

Institute of High Performance Computing

Files uploaded:

https://doi.org/10.1088/2058-9565/ade284