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- Ludwig-Maximilians-Universität MünchenDE568 papers
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15 papers · 2 filters
High-order harmonic generation from Rydberg atoms driven by plasmonic-enhanced laser fields
Y. Tikman, I. Yavuz, M. F. Ciappina +3
We theoretically investigate high-order harmonic generation (HHG) in Rydberg atoms driven by spatially inhomogeneous laser fields, induced, for instance, by plasmonic enhancement.…
Rotational cooling of trapped polyatomic molecules
Rosa Glöckner, Alexander Prehn, Barbara G. U. Englert +2
Controlling the internal degrees of freedom is a key challenge for applications of cold and ultracold molecules. Here, we demonstrate rotational-state cooling of trapped methyl flu…
Quantum interference shifts in laser spectroscopy with elliptical polarization
Pedro Amaro, Filippo Fratini, Laleh Safari +4
We investigate the quantum interference shifts between energetically close states, where the state structure is observed by laser spectroscopy. We report a compact and analytical e…
Signatures of double-electron re-combination in high-order harmonic generation driven by spatially inhomogeneous fields
A. Chacón, M. F. Ciappina, M. Lewenstein
We present theoretical studies of high-order harmonic generation (HHG) driven by plasmonic fields in two-electron atomic systems. Comparing the two-active electron and single-activ…
Optoelectrical cooling of polar molecules to sub-millikelvin temperatures
Alexander Prehn, Martin Ibrügger, Rosa Glöckner +2
We demonstrate direct cooling of gaseous formaldehyde (H2CO) to the microkelvin regime. Our approach, optoelectrical Sisyphus cooling, provides a simple dissipative cooling method…
Experiments towards resolving the proton charge radius puzzle
A. Antognini, K. Schuhmann, F. D. Amaro +34
We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the…