[TuD2] Nanowire and Quantum Dots

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)

[TuD2-06 LN] Photonic Cluster State Generation from a Telecom-Emitting Quantum Dot

〇Giora Peniakov¹, Reza Hekmati¹, Johannes Michl¹, Mohamed Helal¹, Moritz Meinecke¹, Jochen Kaupp¹, Yorick Reum¹, Andreas Pfenning¹, Sven Höfling¹, Tobias Huber-Loyola¹ (1. Julius-Maximilians-Universität Würzburg, Physikalisches Inst., Lehrstuhl für Technische Physik (Germany))

Photonic cluster states are highly entangled quantum states that serve as a key resource for quantum computation and quantum communication. A particular advantage lies in generating these states directly in the telecom wavelength range, which is optimal for compatibility with existing silica fiber infrastructure. Here, we demonstrate the generation of such states using semiconductor quantum dots (InAs/InGaAlAs). Our approach follows a protocol in which a confined hole spin in the quantum dot is repeatedly re-excited, leading to the sequential emission of entangled photons that form a linear cluster state. We fully caracterize this process and find a fidelity of approximately F=0.71 to the ideal case.