Q2NS Demo: A Quantum Network Simulator Based on ns-3

• URL: http://arxiv.org/abs/2604.02112v1
• Date: Thu, 02 Apr 2026 14:48:05 GMT
• Title: Q2NS Demo: A Quantum Network Simulator Based on ns-3
• Abstract summary: Q2NS is an open-source quantum network simulator built on ns-3, the de facto standard for classical network simulation.<n>Q2NS comes with a quantum network visualizer Q2NSViz, supporting interactive inspection of both physical- and entanglement-induced connectivity graphs.<n>We present a demonstration of Q2NS, highlighting its ability to capture and simulate the coexistence of quantum and classical communication.
• Score: 4.00618497702806
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Q2NS is an open-source quantum network simulator built on ns-3, the de facto standard for classical network simulation. By inheriting ns-3's mature classical stack and event-driven execution model, Q2NS enables faithful co-simulation of quantum-network dynamics and classical signaling, a core requirement for the functioning of any quantum network. Its modular architecture is designed for extensibility, with pluggable quantum-state backends (state-vector, density matrix, stabilizer) and a clean separation between network control and node-level operations. Q2NS comes with a quantum network visualizer Q2NSViz, supporting interactive inspection of both physical- and entanglement-induced connectivity graphs, helping users interpret protocol behavior and entanglement manipulation processes. We present a demonstration of Q2NS, highlighting its ability to capture and simulate the coexistence of quantum and classical communication. The proposed demonstration presents quantum communication scenarios of increasing complexity: from entanglement distribution basics to multipartite graph-state manipulation, complemented by pre-loaded examples in Q2NSViz that require no prior quantum communication or coding experience.

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