ansprechpartner

Dr. Stephan Dürr
Stephan Dürr
Gruppenleiter
Telefon: +49 89 3 29 05 - 291
Prof. Dr. Thomas Udem
Thomas Udem
Wissenschaftler
Telefon: +49 89 3 29 05 - 282 // -257




kommende Kolloquien

  • The colloquium series will resume at the beginning of the next term in April/October.

Kolloquien

Kolloquien

Die Gastvorträge im Rahmen des MPQ-Kolloquiums finden von April bis Juli sowie von Oktober bis Januar jeweils dienstags um 14:30 Uhr statt.

Achtung! Ab Oktober 2017 finden die Vorträge, aufgrund der Bauarbeiten, vorübergehend im Interims-Hörsaal, Raum B 0.32 am Max-Planck-Instituts für Quantenoptik statt.

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.

Monat:

"Quantum computers: potential and limitations."

Why do quantum computers outperform classical ones? Is this due to the presence of entanglement? interference? non-commutativity? ... Understanding the relation between quantum and classical computation is a great challenge, both of fundamental and practical importance. In the field of classical simulations, the goal is to identify quantum computations that can be simulated efficiently on a classical computer and to understand which ingredients are responsible for the existence of such simulations. In this talk we discuss a selection of standard results and our own work in this topic. This includes e.g. classical simulations of certain highly entangled computations, the surprising power of commuting quantum operations and the existence of classical simulations of the quantum Fourier transform. [mehr]

"Precise spectroscopy of the molecular hydrogen."

Recent advances in quantum electrodynamic theory and computational techniques for diatomic molecular systems make available the very accurate theoretical predictions for the hydrogen molecule and its isotopomers. Apart from testing fundamental interactions at the atomic scale, comparison with experimental values for rovibrational levels indicates limited applicability of the relativistic quantum chemistry and demonstrates the importance of QED effects. I will review recent progress in the theoretical description of simple molecular systems and present comparison with the most recent measurements performed at ETH Zurich and VU University of Amsterdam. [mehr]

"Laser-plasma acceleration of electrons and protons."

Laser pulses with very short duration and ultra-high peak power can today be efficiently produced with compact lasers. When such pulses are focused, extreme optical intensities are obtained. In their interaction with matter a wide range of exciting phenomena appears and novel fields of investigations and applications become possible. The lecture will concentrate on compact electron and ion acceleration, and some of their potential applications. Examples of results obtained within these areas at the Lund Laser Centre will be presented. [mehr]

"Supernovae, entanglement and falling apples: experiments with Bose-Einstein condensates."

In the last decade and a half, experiments with Bose-Einstein condensates by groups the world over have explored new regimes in condensed matter and atomic physics, tested foundations of quantum mechanics and promised applications from precision metrology to quantum computing. In this talk, I will present three experiments encompassing a variety of BEC physics. I will describe our progress towards squeezing-enhanced interferometry beyond the classical limit, and present results from a BEC gravimeter using large-momentum-transfer beamsplitting. I will also discuss our recent work on the 'bosenova' phenomenon: the collapse of Bose-Einstein condensates with attractive interactions. [mehr]

New concepts for the development of carbon nanotube materials for advanced photonics applications

Like all nanostructures, carbon nanotubes have interesting electromagnetic properties in the near field. The electromagnetic field near the cylindrical nanotube surface is affected by the electronic band structure, surface conductivity, and surface curvature of the nanotube. As a result, the interactions between the surface electromagnetic modes of the nanotube and, say, a surface excitonic state, or an atom (ion, molecule) doped into the nanotube have specific behaviors that have not been deeply explored thus far. [mehr]

 
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