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“Controlling and Exploring
Quantum Matter at the Single Atom Level “
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Date: |
Download-files: |
Time: |
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Thursday, 26. Nov. 2015 |
Audio-only-Recording as MP3-File
(smallest possible size):
- Audio.mp3 (ca.30 Mb) ============================================ Video-Recording for any system with MP4-support:
- Video.mp4 (ca.261 Mb) |
15:15 – 16:20 |
Speaker:
Immanuel Bloch (Ludwig-Maximilians-Universität, München)
Abstract :
More than 30 years ago, Richard Feynman outlined the visionary concept of a quantum
simulator for carrying out complex physics calculations. Today, his dream has
become a reality in laboratories around the world. In my talk I will focus on
the remarkable opportunities offered by ultracold quantum gases trapped in
optical lattices to address fundamental physics questions ranging from
condensed matter physics over statistical physics to high energy physcis with
table-top experiment.
For
example, I will show how it has now become possible to image and control
quantum matter with single atom sensitivity and single site resolution, thereby
allowing one to directly image individual quantum fluctuations of a many-body
system. Such ultrahigh resolution and sensitivity have also enabled us to
detect 'Higgs' type excitations occurring at 24 orders of magnitude lower
energy scales than in high energy physics experiments. I will also show, how
recent experiments with cold gases in optical lattices have enabled to realise
and probe artificial magnetic fields that lie at the heart of topological
energy bands in a solid. Using a novel ‘Aharonov-Bohm’ type interferometer that
acts within the momentum space, we are now able to fully determine
experimentally the geometric structure of an energy band.