Publications (6)
Evolution of dopant-induced helium nanoplasmas
S. R. Krishnan, Ch. Peltz, L. Fechner +13
Two-component nanoplasmas generated by strong-field ionization of doped helium nanodroplets are studied in a pump-probe experiment using few-cycle laser pulses in combination with…
Ultracold atoms in radio-frequency-dressed potentials beyond the rotating wave approximation
S. Hofferberth, B. Fischer, T. Schumm +2
We study dressed Bose-Einstein condensates in an atom chip radio-frequency trap. We show that in this system sufficiently strong dressing can be achieved to cause the widely used r…
Radio-frequency dressed state potentials for neutral atoms
S. Hofferberth, I. Lesanovsky, B. Fischer +2
Potentials for atoms can be created by external fields acting on properties like magnetic moment, charge, polarizability, or by oscillating fields which couple internal states. The…
Dopant induced ignition of helium nanodroplets in intense few-cycle laser pulses
S. R. Krishnan, L. Fechner, M. Kremer +13
We demonstrate ultrafast resonant energy absorption of rare-gas doped He nanodroplets from intense few-cycle (~10 fs) laser pulses. We find that less than 10 dopant atoms "ignite"…
Non-equilibrium coherence dynamics in one-dimensional Bose gases
S. Hofferberth, I. Lesanovsky, B. Fischer +2
Low-dimensional systems are beautiful examples of many-body quantum physics. For one-dimensional systems the Luttinger liquid approach provides insight into universal properties. M…
Muon spin rotation measurements on RbEuFeAs under pressure
S. Holenstein, B. Fischer, Y. Liu +13
We report muon spin rotation and magnetization measurements on the magnetic superconductor RbEuFeAs under hydrostatic pressures up to 3.8 GPa. At ambient pressure, RbEu…