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Klein paradox for bosons, wave packets and negative tunnelling times
(Nature, 2020-11-05)
We analyse a little known aspect of the Klein paradox. A Klein-Gordon boson appears to be able to cross a supercritical rectangular barrier without being reflected, while spending there a negative amount of time. The ...
Shortcuts to adiabatic rotation of a two-ion chain
(IOP, 2021-10)
We inverse engineer fast rotations of a transversally tight, linear trap with two ions for a predetermined rotation angle and time, avoiding final excitation. Different approaches are analyzed and compared when the ions ...
Fast Driving of a Particle in Two Dimensions without Final Excitation
(MDPI, 2022-11-19)
Controlling the motional state of a particle in a multidimensional space is key for fundamental science and quantum technologies. Applying a recently found two-dimensional invariant combined with linear invariants, we ...
Lignin solvation by ionic liquids: The role of cation
(Elsevier, 2020-01-30)
The use of ionic liquids as solvents for the processing of lignocellulosic material has received considerable attention in the last years, since it presents remarkable advantages over previous solvent-based procedures. In ...
Quantum Measurements and Delays in Scattering by Zero-Range Potentials
(MDPI, 2024-01-16)
Eisenbud–Wigner–Smith delay and the Larmor time give different estimates for the duration of a quantum scattering event. The difference is most pronounced in the case where the de Broglie wavelength is large compared to ...