Berlin 2024 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 14: Poster II

HL 14.3: Poster

Monday, March 18, 2024, 15:00–18:00, Poster F

Microscopic Simulations of Photonic Cluster-State Generation with Lambda-Type Systems — •Nikolas Köcher, David Bauch, Nils Heinisch, and Stefan Schumacher — Physics Department, CeOPP, and PhoQS, Paderborn University, Germany

In this work, we conduct an in-depth exploration of microscopic quantum-mechanical simulations of the deterministic generation of photonic cluster states from lambda-type systems, with a particular focus on time-bin encoded linear cluster states. Our analysis includes a thorough examination of second and third order time-bin correlations, including stabilizer generator expectation values to quantify the quality of the generated states. The foundation of our exploration lies in the lambda-type system, where proposed protocols for deterministic generation are established [1], utilizing a hole-spin qubit in quantum dot molecules. The quantum dot molecule's lambda system serves as the backdrop for our simulations, providing detailed insights into the efficiency and viability of the proposed protocols. Our aim is to contribute to the understanding of these quantum systems and their potential applications in the generation of highly entangled photonic cluster states [2], considering both the quality and localizable entanglement in the generated quantum states. [1] Vezvaee et al., Phys. Rev. Appl. 18.L061003 (2022). [2] Raissi et al., arXiv preprint 2211.13242 (2022).

Keywords: Quantum Dot Molecules; Photonic Cluster States; Photonic Graph States; Higher Order Correlations; Stabilizer Generator