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Q: Fachverband Quantenoptik und Photonik

Q 9: Open Quantum Systems and Spin-Boson Systems I

Q 9.6: Talk

Monday, March 2, 2026, 18:15–18:30, P 4

Spontaneous emission dynamics in topological quantum emitter chains — •Jonathan Sturm and Adriana Pálffy — Julius-Maximilians-Universität Würzburg

Quantum emitter arrays are a powerful platform enabling tailored control of quantum optical phenomena, like super- and subradiance or efficient photon storage. Since state-of-the-art experimental techniques allow the realization of almost arbitrary lattice structures, a natural question is what physical effects arise if the lattice has nontrivial topology.

We theoretically study the spontaneous emission dynamics in quantum emitter chains with Su-Schrieffer-Heeger geometry similar to the ones studied in [1]. By solving the quantum master equation, we investigate how the presence of protected edge modes can be utilized to enhance the properties of the emitted light. Our studies pave the way for optimized single-photon sources [2] and topologically protected mirrorless lasing [3].
[1] J. Sturm and A. Pálffy, Phys. Rev. Research 7, L032069 (2025)
[2] Y. Wang et al., npj Quantum Inf 10, 13 (2024)
[3] A. Bychek et al., Phys. Rev. Lett. 135, 143601 (2025)

Keywords: Topology; Master equation