12 citations · 21 across the 4 of their papers we have counts for
4 papers
Entanglement-enhanced optical ion clock
Kai Dietze, Lennart Pelzer, Ludwig Krinner +11
Entangled states hold the promise of improving the precision and accuracy of quantum sensors. We experimentally demonstrate that spectroscopy of an optical clock transition using e…
Bayesian Frequency Metrology with Optimal Ramsey Interferometry in Optical Atomic Clocks
Timm Kielinski, Klemens Hammerer
Frequency metrology is a cornerstone of modern precision measurements and optical atomic clocks have emerged as the most precise measurement devices. In this progress report, we ex…
GHZ protocols enhance frequency metrology despite spontaneous decay
Timm Kielinski, Piet O. Schmidt, Klemens Hammerer
The use of correlated states and measurements promises improvements in the accuracy of frequency metrology and the stability of atomic clocks. However, developing strategies robust…
Optimal Ramsey interferometry with echo protocols based on one-axis twisting
Maja S. Scharnagl, Timm Kielinski, Klemens Hammerer
We study a variational class of generalised Ramsey protocols that include two one-axis twisting (OAT) operations, one performed before the phase imprint and the other after. In thi…