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Quantum Many-Body Systems
Secretariat: Kristina Schuldt
Phone:        +49 89 3 29 05 - 138

Theory
Secretariat: Andrea Kluth
Phone:        +49 89 3 29 05 - 736

Laser Spectroscopy
Secretariat: Ingrid Hermann
Phone:        +49 89 3 29 05 - 712

Attosecond Physics
Secretariat: Corin Abert
Phone:        +49 89 3 29 05 - 612

Quantum Dynamics
Secretariat: Iris Schwaiger
Phone:        +49 89 3 29 05 - 711

Seminars 2016

seminars 2015

Seminars

Seminars

On an irregular basis various Special Seminars take place at the MPQ. The seminars are organized by scientists of our divisions, administration or staff representatives.

The location will be announced with the event.

Month:

Quantum Emitters in Non-Conventional Baths (European Research Council)

An effective description of Ramsey tunnel-coupled 1D Bose gases with the Pokrovsky-Talapov model

An effective description of Ramsey tunnel-coupled 1D Bose gases with the Pokrovsky-Talapov model (Valentin Kasper)

The high flexibility of ultracold atoms allows for the design, control and thorough investigation of quantum matter. In this work we consider two one-dimensional Ramsey tunnel-coupled Bose gases and elaborate on its relation to the Prokrovsky-Talapov model. Further, we study the ground state with variational wave-functions and explore the experimental relevant finite system size effects. Finally, we discuss possible quench protocols in order to study the non-equilibrium evolution of the Pokrovsky-Talapov model and predict experimental relevant quantities such as the phase and the density. [more]

Flat Optics: a new approach to structured light, polarization control and lenses

Flat Optics: a new approach to structured light, polarization control and lenses (Prof. Federico Capasso)

Metasurfaces enable arbitrary control of the wavefront of light by locally manipulating polarization in addition to amplitude and phase. As a result, multiple optical functions can be encoded with greatly reduced complexity that be accessed by changing the input polarization, wavelength and k-vector. Unique ways to generate structured light, a new polarization optics that greatly surpasses the capabilities of the standard and a new class of lenses that correct aberrations without requiring multiple stacked lenses have emerged from this approach. [more]

SDP relaxations for the certification of properties of many-body quantum states

SDP relaxations for the certification of properties of many-body quantum states (Flavio Baccari)

Understanding the properties of many-body systems is one of the crucial questions for the development of quantum technologies. An ubiquitous problem is to certify that a given many-body quantum system satisfies an operational property: is this given system in an entangled state? Does it contain the solution to a classical optimisation problem? [more]

The 2nd Law: History and Fiction

16923 1543914483

The 2nd Law: History and Fiction (Prof. Assa Auerbach)

The talk The 2nd Law: History and Fiction discusses the history of Maxwell’s Demon, the Second Law of Thermodynamics, and its connection to Information Theory. It shows how these concepts can be explained to non-physicists in a comic book of an adventure story called “Max the Demon vs Entropy of Doom’’. [more]

 
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