Calculating the Capacity Region of a Quantum Switch

Tillman, Ian; Vasantam, Thirupathaiah; Towsley, Don; Seshadreesan, Kaushik P.

Abstract

Quantum repeaters are necessary to fully realize the capabilities of the emerging quantum internet, especially applications involving distributing entanglement across long distances. A more general notion of this can be called a quantum switch, which connects to many users and can act as a repeater to create end-to-end entanglement between different subsets of these users. Here we present a method of calculating the capacity region of both discrete- and continuous-variable quantum switches that in general support mixed-partite entanglement generation. The method uses tools from convex analysis to generate the boundaries of the capacity region. We show example calculations with illustrative topologies and perform simulations to support the analytical results.

Citation

Tillman, I., Vasantam, T., Towsley, D., & Seshadreesan, K. P. (2024, September). Calculating the Capacity Region of a Quantum Switch. Presented at QCE2024: IEEE International Conference on Quantum Computing and Engineering, Montréal, Québec, Canada

• Presentation Conference Type: Conference Paper (published)
• Conference Name: QCE2024: IEEE International Conference on Quantum Computing and Engineering
• Start Date: Sep 15, 2024
• End Date: Sep 20, 2024
• Acceptance Date: Jul 16, 2024
• Online Publication Date: Jan 10, 2025
• Publication Date: Jan 10, 2025
• Deposit Date: Sep 26, 2024
• Publicly Available Date: Jan 10, 2025
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Pages: 1868-1878
• Book Title: 2024 IEEE International Conference on Quantum Computing and Engineering (QCE)
• ISBN: 9798331541385
• DOI: https://doi.org/10.1109/QCE60285.2024.00216
• Public URL: https://durham-repository.worktribe.com/output/2878590