H. Häffner

activity

20012022

most citedScalable multi-particle entanglement of trapped ions

1.3k citations · 5.1k across the 45 of their papers we have counts for

collaborators

Showing 2013 · physics.atom-phShow all

3 papers · 2 filters

physics.atom-ph2013★ 10 cited

Direct spectroscopy of the $^{2}$ S $_{1/2} -^{2}$ P $_{1/2}$ and $^{2}$ D $_{3/2} -^{2}$ P $_{1/2}$ transitions and observation of micromotion modulated spectra in trapped \Ca

Thaned Pruttivarasin, Michael Ramm, Hartmut Haeffner

We present an experimental scheme to perform spectroscopy of the $^{2}$ S $_{1/2} -^{2}$ P $_{1/2}$ and $^{2}$ D $_{3/2} -^{2}$ P $_{1/2}$ transitions in \Ca. By rapidly switching lasers between bot…

physics.atom-ph2013★ 1 cited

Probing surface electric field noise with a single ion

N. Daniilidis, S. Gerber, G. Bolloten +5

We report room-temperature electric field noise measurements combined with in-situ surface characterization and cleaning of a microfabricated ion trap. We used a single-ion electri…

physics.atom-ph2013★ 57 cited

Precision Measurement Method for Branching Fractions of Excited P1/2 States Applied to 40Ca+

Michael Ramm, Thaned Pruttivarasin, Mark Kokish +2

We present a method for measuring branching fractions for the decay of $J = 1/2$ atomic energy levels to lower-lying states based on time-resolved recording of the atom's fluoresce…

Direct spectroscopy of the 2S1/2​−2P1/2​ and 2D3/2​−2P1/2​ transitions and observation of micromotion modulated spectra in trapped \Ca

Probing surface electric field noise with a single ion

Precision Measurement Method for Branching Fractions of Excited P1/2 States Applied to 40Ca+

Direct spectroscopy of the $^{2}$ S $_{1/2} -^{2}$ P $_{1/2}$ and $^{2}$ D $_{3/2} -^{2}$ P $_{1/2}$ transitions and observation of micromotion modulated spectra in trapped \Ca