90 citations · 130 across the 8 of their papers we have counts for
8 papers
Anomalous weak values in a generalized Mach-Zehnder interferometer extracted directly from intensity measurements
Ismaele V. Masiello, Hartmut Lemmel, Andreas Dvorak +2
Weak values provide a powerful framework for characterizing quantum systems. Their experimental extraction conventionally relies on weak conditioned von Neumann measurements, invol…
Experimental test of symmetron-field based dark energy model using neutron interferometry
Andreas Dvorak, Kazuma Obigane, Hartmut Lemmel +2
We report phase shift measurements of neutron matter waves propagating in vacuum and low-pressure Argon gas, using a technique developed for neutron interferometric scattering leng…
Orbital Angular Momentum Generation in Schwinger Scattering from Perfect Quartz
Niels Geerits, Anna-Sophie Berger, Hartmut Lemmel +4
Static electric fields have been suggested as a spin to orbital angular momentum converter in neutrons. Initial calculations showed that the field required to facilitate significan…
Tight qubit uncertainty relations studied through weak values in neutron interferometry
Andreas Dvorak, Ismaele V. Masiello, Yuji Hasegawa +3
In its original formulation, Heisenberg's uncertainty principle describes a trade-off relation between the error of a quantum measurement and the thereby induced disturbance on the…
Search for dark energy with neutron interferometry
Hauke Fischer, Christian Käding, Hartmut Lemmel +2
We use previously obtained experimental results by neutron interferometry to effectively constrain the parameter space of several prominent dark energy models. This investigation e…
Neutron Interferometry constrains dark energy chameleon fields
H. Lemmel, Ph. Brax, A. N. Ivanov +7
We present phase shift measurements for neutron matter waves in vacuum and in low pressure Helium using a method originally developed for neutron scattering length measurements in…
Comment on "Relativistic effects in atom and neutron interferometry and the differences between them" by Greenberger, Schleich and Rasel
Hartmut Lemmel
Bragg diffraction is comparable to a hard-wall reflection if the Bragg condition is exactly fulfilled. However, in a neutron interferometer in the gravitational field (COW experime…
Improvement of the polarized neutron interferometer setup demonstrating violation of a Bell-like inequality
Hermann Geppert, Tobias Denkmayr, Stephan Sponar +2
For precise measurements with polarized neutrons high efficient spin-manipulation is required. We developed several neutron optical elements suitable for a new sophisticated setup,…