activity
20002023
most citedDynamical phase transition in the open Dicke model

358 citations · 3k across the 43 of their papers we have counts for

collaborators
Showing physics.atom-phShow all

5 papers · 1 filter

physics.atom-ph2019★ 86 cited

Pulse delay time statistics in a superradiant laser with calcium atoms

Torben Laske, Hannes Winter, Andreas Hemmerich

Cold samples of calcium atoms are prepared in the metastable P state inside an optical cavity resonant with the narrow band (375 Hz) SP$_{1…

physics.atom-ph2013★ 6 cited

Inelastic collisions of optically trapped metastable calcium atoms

Purbasha Halder, Hannes Winter, Andreas Hemmerich

We study binary collisions of metastable calcium atoms (Ca) in an optical dipole trap. Collisions between P-atoms and between P and S-ato…

physics.atom-ph2002★ 29 cited

Magnetic Trapping of Metastable Calcium Atoms

Dirk P. Hansen, Janis R. Mohr, Andreas Hemmerich

Metastable calcium atoms, produced in a magneto-optic trap (MOT) operating within the singlet system, are continuously loaded into a magnetic trap formed by the magnetic quadrupole…

physics.atom-ph2001★ 29 cited

Optimizing the production of metastable calcium atoms in a magneto-optical trap

Jan Gruenert, Andreas Hemmerich

We investigate the production of long lived metastable (3P2, n=4) calcium atoms in a magneto-optical trap operating on the 1S0 to 1P1 transition at 423 nm. For excited 1P1-atoms a…

physics.atom-ph2000★ 6 cited

Ultracold Metastable Calcium Ensembles, a Medium for Matter Wave Amplification ?

J. Gruenert, G. Quehl, V. Elman +1

We propose an experimental implementation of matter wave amplification by optical pumping (MAO) with metastable calcium atoms. First experimental results indicate that pumping rate…