Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 19: Quantum Networks, Repeaters, and QKD II (joint session Q/QI)

Q 19.5: Vortrag

Dienstag, 11. März 2025, 12:00–12:15, AP-HS

Simulation of a heterogeneous quantum network using NetSquid — •Daniel Ventker, Ann-Kathrin Müller, and Florian Elsen — Chair for Laser Technology, RWTH Aachen University

As the relevance of advancing quantum computers continues to grow, so does the need to establish quantum channels between various laboratories to create quantum networks. A quantum internet should be capable of connecting multiple types of qubit platforms, e.g. allowing the use of separate computing and storage nodes or the readout of distinct quantum sensors within the network. The fundamental resource required for such a network is entanglement shared among spatially separated nodes. One way to entangle states over larger distances is through Bell state measurements. In this process, locally entangled photons are emitted from individual nodes to interfere at a central midpoint. This in turn creates entanglement, that transfers over to the respective nodes.

The design of experimental implementations of heterogeneous networks is a complex task. The optimal working point is determined by the characteristics and performance of each individual component. For this reason, a simulation based on the Python package "NetSquid" is developed to combine the theoretical model with the parameters of real components. The goal is to analyze how each of the components influences the overall system and what needs to be considered when designing a new setup. Specifically, this work addresses a heterogeneous connection between an NV-center and a quantum dot, focusing on the system's behavior concerning a quantum frequency converter.

Keywords: Heterogeneous Quantum Network; Simulation; NetSquid; Quantum Frequency Conversion; Entanglement