Seminars

Quantum physics with compound atom-ion systems (Dr. Antonio Negretti)

Quantum physics with compound atom-ion systems

Date: Nov 28, 2018
Time: 10:30 AM (Local Time Germany)
Speaker: Dr. Antonio Negretti
Associate Professor at Center for Optical Quantum Technologies, Universität Hamburg
Location: Max-Planck-Institut für Quantenoptik
Room: Hörsaal, Raum B 0.32 / New lecture hall, Room B 0.32
Host: MPQ, Theory Division, hosted by Dr. Richard Schmidt
Contact: richard.schmidt@mpq.mpg.de

In this talk I shall illustrate how ultracold quantum systems of atoms and ions can be used for quantum simulation and information processing as well as for investigating many-body quantum physics. I shall thus present a few theoretical examples on how to control an atomic bosonic Josephson junction with a single trapped ion, the formation of molecular ions, and how to engineer long-ranged atom-ion interactions with laser fields and Rydberg excitations. [more]

Quantum anomaly and transport in the 2D Fermi gas

Date: Oct 10, 2018
Time: 10:30 AM - 12:00 PM (Local Time Germany)
Speaker: Dr. Tilman Enss
Institut für Theoretische Physik, Karl-Ruprechts-Universität Heidelberg
Location: Max-Planck-Institut für Quantenoptik
Room: New Lecture Hall, Room B 0.32
Host: MPQ, Theory Division, hosted by Dr. Richard Schmidt

A scale invariant system looks similar on different length scales. Usually this is realized only after some fine tuning, for instance near a phase transition or a scattering resonance. Remarkably, a classical gas in two dimensions is scale invariant for an arbitrary strength of contact interaction. This has striking consequences for its nonequilibrium scaling dynamics, in particular the breathing motion in a harmonic trapping potential. [more]

Stable p-wave resonant two-dimensional Fermi-Bose dimers (Prof. Dmitry Petrov)

Date: Sep 25, 2018
Time: 10:30 AM - 12:00 PM (Local Time Germany)
Speaker: Prof. Dmitry Petrov
Location: Max-Planck-Institut für Quantenoptik
Room: New Lecture Hall, Room B 0.32
Host: MPQ, Theory Division, hosted by Dr. Richard Schmidt
Contact: richard.schmidt@mpq.mpg.de

We consider two-dimensional weakly-bound heterospecies molecules formed in a Fermi-Bose mixture with attractive Fermi-Bose and repulsive Bose-Bose interactions. [more]

Ultracold chromium-lithium Fermi mixtures with resonant few-body interactions (Prof. Matteo Zaccanti)

Date: Sep 25, 2018
Time: 09:15 AM - 10:45 AM (Local Time Germany)
Speaker: Prof. Matteo Zaccanti
Location: Max-Planck-Institut für Quantenoptik
Room: New Lecture Hall, Room B 0.32
Host: MPQ, Theory Division, hosted by Dr. Richard Schmidt
Contact: richard.schmidt@mpq.mpg.de

From quark and nuclear matter down to solid-state systems and ultracold gases, mass asymmetry is known to profoundly influence the behavior of strongly interacting mixtures of fermionic particles, both at the few- and many-body level. [more]

Nonlinear Optics with Rydberg Excitons (V. Walther)

Date: Jul 25, 2018
Time: 11:30 AM - 01:00 PM (Local Time Germany)
Speaker: Valentin Walther
Aarhus University, Department of Physics and Astronomy, visiting MPQ from 23.07. to 27.07.18
Location: Max-Planck-Institut für Quantenoptik
Room: Seminar room Theory Division - B 2.46
Host: MPQ, Theory Division, hosted by Dr. Richard Schmidt

The realization of exciton polaritons -- hybrid excitations of semiconductor quantum well excitons and cavity photons -- has been of great technological and scientific significance. [more]