Invention Grant
- Patent Title: Quantum secure network clock synchronization
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Application No.: US17348585Application Date: 2021-06-15
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Publication No.: US11575456B2Publication Date: 2023-02-07
- Inventor: Antia Lamas-Linares , W. Cyrus Proctor
- Applicant: Xairos Systems, Inc.
- Applicant Address: US CO Lone Tree
- Assignee: Xairos Systems, Inc.
- Current Assignee: Xairos Systems, Inc.
- Current Assignee Address: US CO Lone Tree
- Agency: Neugeboren O'Dowd PC
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04B10/70 ; H04L9/40

Abstract:
A multi-node, quantum communication network for providing quantum-secure time transfer with Damon attack detection is described. The network includes three or more nodes connected via authenticated communication channels forming a closed loop. By determining differences between the local times at as well as the time durations required for photons to travel between the three or more nodes, the network detects a Damon attack, if present. For example, the network imposes a closed loop condition to detect the Damon attack. The network can also use the local time differences and time durations for photon travel between nodes to synchronize the local clocks at the three or more nodes of the network.
Public/Granted literature
- US20210391939A1 Quantum Secure Network Clock Synchronization Public/Granted day:2021-12-16
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