115 citations · 508 across the 9 of their papers we have counts for
9 papers
Local probe of single phonon dynamics in warm ion crystals
Ahmed Abdelrahman, Omid Khosravani, Manuel Gessner +8
The detailed characterization of non-trivial coherence properties of composite quantum systems of increasing size is an indispensable prerequisite for scalable quantum computation,…
A Michelson-Morley Test of Lorentz Symmetry for Electrons
T. Pruttivarasin, M. Ramm, S. G. Porsev +4
All evidence so far suggests that the absolute spatial orientation of an experiment never affects its outcome. This is reflected in the Standard Model of physics by requiring all p…
Observing a Quantum Phase Transition by Measuring a Single Spin
Manuel Gessner, Michael Ramm, Hartmut Haeffner +2
We show that the ground-state quantum correlations of an Ising model can be detected by monitoring the time evolution of a single spin alone, and that the critical point of a quant…
Direct spectroscopy of the SP and DP 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 SP and DP transitions in \Ca. By rapidly switching lasers between bot…
Energy Transport in Trapped Ion Chains
Michael Ramm, Thaned Pruttivarasin, Hartmut Häffner
We experimentally study energy transport in chains of trapped ions. We use a pulsed excitation scheme to rapidly add energy to the local motional mode of one of the ions in the cha…
Local Detection of Quantum Correlations with a Single Trapped Ion
M. Gessner, M. Ramm, T. Pruttivarasin +3
As one of the most striking features of quantum mechanics, quantum correlations are at the heart of quantum information science. Detection of correlations usually requires access t…
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…
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 atomic energy levels to lower-lying states based on time-resolved recording of the atom's fluoresce…
Trapped ions in optical lattices for probing oscillator chain models
Thaned Pruttivarasin, Michael Ramm, Ishan Talukdar +2
We show that a chain of trapped ions embedded in microtraps generated by an optical lattice can be used to study oscillator models related to dry friction and energy transport. Num…