118 citations · 439 across the 11 of their papers we have counts for
11 papers
Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons
Juan M. Cornejo, Ralf Lehnert, Malte Niemann +9
Cosmological observations as well as theoretical approaches to physics beyond the Standard Model provide strong motivations for experimental tests of fundamental symmetries, such a…
Quantum Variational Optimization of Ramsey Interferometry and Atomic Clocks
Raphael Kaubruegger, Denis V. Vasilyev, Marius Schulte +2
We discuss quantum variational optimization of Ramsey interferometry with ensembles of entangled atoms, and its application to atomic clocks based on a Bayesian approach to pha…
Elementary laser-less quantum logic operations with (anti-)protons in Penning traps
Diana Nitzschke, Marius Schulte, Malte Niemann +5
Static magnetic field gradients superimposed on the electromagnetic trapping potential of a Penning trap can be used to implement laser-less spin-motion couplings that allow the re…
Ramsey interferometry with generalized one-axis twisting echoes
Marius Schulte, Victor J. Martínez-Lahuerta, Maja S. Scharnagl +1
We consider a large class of Ramsey interferometry protocols which are enhanced by squeezing and un-squeezing operations before and after a phase signal is imprinted on the collect…
Prospects and challenges for squeezing-enhanced optical atomic clocks
Marius Schulte, Christian Lisdat, Piet O. Schmidt +2
We have investigated the benefits of spin squeezed states for clocks operated with typical Brownian frequency noise-limited laser sources. Based on an analytic model of the closed…
Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions
Fabian Wolf, Chunyan Shi, Jan C. Heip +6
Non-vanishing fluctuations of the vacuum state are a salient feature of quantum theory. These fluctuations fundamentally limit the precision of quantum sensors. Nowadays, several s…