Seminare

Integrated nonlinear optics and Inverse-designed multimode photonics

Datum: 30.09.2022
Uhrzeit: 10:00
Vortragende(r): Kiyoul Yang
Nanoscale and Quantum Photonics Lab, Stanford University, Stanford, CA, USA
Ort: Max Planck Institute of Quantum Optics
Raum: Herbert Walther Lecture Hall
Gastgeber: MPQ, Laser Spectroscopy Division

In this talk, we will discuss new opportunities involving chip-scale nonlinear optics along with inverse-designed photonic circuits for multi-dimensional information processing. As a specific example, I will introduce recent experiments where we demonstrate natively error-free terabit/s data transmission using integrated frequency combs and multimode silicon photonics. [mehr]

Special Seminar: Absolute Measurement of a THz Transition Frequency Referenced to a Magnetic Dipolar Transition in Ca+ ion

Datum: 06.09.2022
Uhrzeit: 11:00
Vortragende: Dr. Caroline Champenois
Aix-Marseille University, CNRS, Institute de Physique des Interactions Ioniques et Moléculaires, Marseille, France
Ort: Max Planck Institute of Quantum Optics
Raum: Hörsaal, Raum B 0.32 / New lecture hall, Room B 0.32
Gastgeber: MPQ, Laser Spectroscopy Division

A three-photon Coherent Population Trapping is observed by the dark line it induces on the laser induced fluorescence of a laser-cooled Ca+ ion cloud. This dark line is referenced to a magnetic dipolar transition at 1.8 THz, between two fine-structure sub-state of a metastable state. We explore the performance of such a system for frequency metrology in the THz domain. [mehr]