“Semiconductor quantum dots emitting at 1550 nm for photonic quantum technologies” (Prof. Sven Höfling)

Datum: 20.01.2026
Uhrzeit: 14:30
Vortragende(r): Prof. Sven Höfling
Universität Würzburg
Ort: Max Planck Institute of Quantum Optics, Hans-Kopferman-Straße 1, 85748 Garching
Raum: Herbert Walther Lecture Hall

Polarization dependent two-photon correlations at 1550 nm emitted from a semiconductor quantum dot

In this talk, we will present our recent progress in demonstrating a cluster state generation protocol using telecom-emitting quantum dots. In particular, we use an InAs/InAlGaAs quantum dot incorporated in a circular Bragg grating (‘Bullseye’) microcavity.

We will present spin initialization and readout experiments based on a confined hole, and describe the pulse sequence needed to implement cluster state generation. Finally, we will share recent three-photon correlation results on the path to obtaining a full tomography of the process.