32 citations · 37 across the 6 of their papers we have counts for
6 papers
Dressed-State Spectroscopy of Proton Spins in Water Beyond the Rotating-Wave Approximation
Ivo Schulthess, Anastasio Fratangelo, Patrick Hautle +6
The quantum Rabi model provides the framework for describing a two-level system interacting with a strong oscillating field beyond the rotating-wave approximation. We report the fi…
Frequency-offset separated oscillatory fields technique applied to neutrons
Anastasio Fratangelo, Philipp Heil, Christine Klauser +6
The novel technique of frequency-offset separated oscillatory fields (FOSOF) has been originally proposed as a modification to Ramsey's method of separated oscillatory fields. It h…
Resonant Cancellation Effect in Ramsey-type Nuclear Magnetic Resonance Experiments
Ivo Schulthess, Ivan Calic, Estelle Chanel +8
We investigate the response of a Ramsey-type experiment on an additional oscillating magnetic field. This superimposed field is oriented in the same direction as the static main ma…
A Ramsey apparatus for proton spins in flowing water
Ivo Schulthess, Anastasio Fratangelo, Patrick Hautle +6
We present an apparatus that applies Ramsey's method of separated oscillatory fields to proton spins in water molecules. The setup consists of a water circuit, a spin polarizer, a…
New Limit on Axion-Like Dark Matter using Cold Neutrons
Ivo Schulthess, Estelle Chanel, Anastasio Fratangelo +8
We report on a search for dark matter axion-like particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon-coupling would manifest in a neutron ele…
Passive alignment stability and auto-alignment of multipass amplifiers based on Fourier transforms
Karsten Schuhmann, Klaus Kirch, Andreas Knecht +8
The stability properties of Fourier-based multipass amplifier to misalignments (tilts) of its optical components has been investigated. For this purpose, a method to quantify the s…