Aufgrund der aktuellen Situation (COVID-19) finden die Gastvorträge das MPQ Kolloquiums bis auf Weiteres nur online statt. Details zur Teilnahme werden über die Mailing-Listen [wiss-mpq] und [Mpq-colloquium-stream] versandt. Bitte registrieren Sie sich hierzu über den nebenstehenden Link.

Ansprechpartner für die wissenschaftliche Organisation:  Dr. Stephan Dürr und Dr. Thomas Udem

Wenn Sie einen Vortrag im Livestream verfolgen möchten, ist es nötig, dass Sie sich in eine entsprechende Mailing Liste eintragen. Daraufhin erhalten Sie Instruktionen zum Empfang des Livestreams.

+++ONLINE KOLLOQUIUM+++ Circular Rydberg atoms : exploring and harnessing the quantum (Prof. Jean-Michel Raimond)

Circular Rydberg atoms are ideal tools for exploring and harnessing the quantum. These very excited states, the closest to the Bohr circular orbit model, feature a very long lifetime, an extremely strong coupling to electromagnetic fields and a large dipole-dipole mutual interaction. [mehr]

+++ONLINE KOLLOQUIUM+++ (MCQST-Kolloquium) Topological materials science (Prof. Claudia Felser)

Topology, a mathematical concept, recently became a hot and truly transdisciplinary topic in condensed matter physics, solid state chemistry and materials science. Since there is a direct connection between real space: atoms, valence electrons, bonds and orbitals, and reciprocal space: bands, Fermi surfaces and Berry curvature, a simple classification of topological materials in a single particle picture should be possible. [mehr]

+++ONLINE TALK+++ Novel avenues for robust free-space quantum communications (Prof. Thomas Jennewein)

Quantum information processing and quantum communication are novel protocols that originate from the very fundamental and philosophical questions on superposition and entanglement raised since the early days of quantum mechanics. Strikingly, these new protocols offer capabilities beyond communication task possible with classical physics. [mehr]
Laser frequency combs enable new approaches to molecular spectroscopy [1]. Dual-comb spectroscopy, a technique of Fourier-transform interferometry with two frequency combs of slightly different repetition rates, holds much promise for broadband, high-¬resolution, precise, and sensitive molecular fingerprinting. Its development in the mid-infrared region (2-20 µm), where most molecules have strong rovibrational transitions, is of fundamental interest to molecular science, though technically challenging. [mehr]

+++ONLINE KOLLOQUIUM+++ A subradiant atomic mirror (M. Sc. David Wei)

When quantum emitters are spatially structured on sub-wavelength scales, photon-mediated dipole-dipole interactions can strongly alter the spectral and directional radiative response. Tightly trapped atoms in optical lattices, only coupled to the electromagnetic vacuum, constitute ideal dipolar emitters to study such cooperative behaviour. [mehr]

+++ONLINE KOLLOQUIUM+++ Surprises from Time Crystals (Prof. Vedika Khemani)

Recent years have witnessed a remarkable confluence of diverse areas of physics coming together to inform fundamental questions about many-body quantum matter. A unifying theme in this enterprise has been the study of many-body quantum dynamics in systems ranging from electrons in solids to cold atomic gases to black holes. [mehr]

+++Online Kolloquium+++ Continuous Quantum Light from a Dark Atom (M. Sc. Bo Wang)

Single photons can be generated from a single atom strongly coupled to a optical cavity via a stimulated Raman adiabatic passage between two atomic ground states [1]. During the generation of the photon, the atom stays within the dark state of electromagnetically induced transparency(EIT) avoiding spontaneous decay from the excited state. [mehr]
Abstract to be posted soon [mehr]

+++ONLINE KOLLOQUIUM+++ Superconducting opto-electronic circuits and applications (Prof. Sonia Buckley)

  • Online kolloquium on July 21th, 2020 at 4:30 p.m. if online only!
  • Datum: 21.07.2020
  • Uhrzeit: 16:30
  • Vortragende(r): Prof. Sonia Buckley
  • National Institute of Standards and Technology (NIST), Gaithersburg Maryland, USA
Abstract to be posted soon [mehr]
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