Publications (34)
Microscopy with a Deterministic Single Ion Source
Georg Jacob, Karin Groot-Berning, Sebastian Wolf +6
We realize a single particle microscope by using deterministically extracted laser cooled Ca ions from a Paul trap as probe particles for transmission imaging. We demons…
A nano heat engine beyond the Carnot limit
Johannes RoÃnagel, Obinna Abah, Ferdinand Schmidt-Kaler +2
Heat engines extract work by running cyclically between two heat reservoirs. When the two reservoirs are thermal and at different temperatures, the maximum efficiency of the engine…
Fast thermometry for trapped ions using dark resonances
Johannes RoÃnagel, Karl Nicolas Tolazzi, Ferdinand Schmidt-Kaler +1
We experimentally demonstrate a method to determine the temperature of trapped ions which is suitable for monitoring fast thermalization processes. We show that observing and analy…
Single-atom heat engine as a sensitive thermal probe
Amikam Levy, Moritz Göb, Bo Deng +3
We propose employing a quantum heat engine as a sensitive probe for thermal baths. In particular, we study a single-atom Otto engine operating in an open thermodynamic cycle. Owing…
Mechanical Squeezed Kerr Oscillator based on Tapered Ion Trap
Bogomila S. Nikolova, Motitz Göb, Kilian Singer +1
We propose the realization of a mechanically squeezed Kerr oscillator with a single ion in a tapered trap. We show that the motion coupling between the axial and radial modes cause…
Amplifying a zeptonewton force with a single-ion nonlinear oscillator
Bo Deng, Moritz Göb, Benjamin A. Stickler +3
Nonlinear mechanical resonators display rich and complex dynamics and are important in many areas of fundamental and applied sciences. In this letter, we show that a particle confi…