***HQOC Special Seminar***
**Thursday, January 23nd at 11:00 AM, Lyman 425**
Manuel Endres, Max-Planck Institute for Quantum Optics
Probing Quantum Many-body Systems at the Single-particle Level
The manipulation and detection of individual quantum excitations forms the basis
of modern quantum physics experiments. However, most of these experiments
have been restricted to systems composed of only a few particles.
In recent years, tremendous experimental progress has been made in probing
strongly interacting many-body systems at the level of individual particles. This
was achieved using single-site- and single-atom-resolved imaging and
manipulation of quantum gases in optical lattices. With this technique,
‘snapshots’ of a fluctuating many-body system are obtained, where individual
excitations are directly visible and, by shining light through the imaging system,
are also directly addressable.
I will review these developments and present a few chosen experiments in more
detail: the single-site-resolved detection of correlation functions [1], the
detection of an amplitude ‘Higgs’ mode [2], and the observation of the quantum
dynamics of a mobile spin impurity [3]. I will conclude by analyzing the current
limitations and possible future developments, particularly concerning the
detection of entanglement in quantum many-body systems.
Joan Hamilton
Faculty Assistant to Profs. Greiner and Lukin
HQOC Laboratory Administrator
HUCTW Local Union Representative
Harvard University
Department of Physics
17 Oxford Street
Cambridge, MA 02138
P: (617) 496-2544
F: (617) 496-2545
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