23 citations · 75 across the 7 of their papers we have counts for
7 papers
Nanoscale magnetism probed in a matter-wave interferometer
Yaakov Y. Fein, Sebastian Pedalino, Armin Shayeghi +3
We explore a wide range of fundamental magnetic phenomena by measuring the dephasing of matter-wave interference fringes upon application of a variable magnetic gradient. The versa…
Bragg diffraction of large organic molecules
Christian Brand, Filip Kiałka, Stephan Troyer +5
We demonstrate Bragg diffraction of the antibiotic ciprofloxacin and the dye molecule phthalocyanine at a thick optical grating. The observed patterns show a single dominant diffra…
Orbital angular momentum interference of trapped matter waves
Filip Kiałka, Benjamin A. Stickler, Klaus Hornberger
We introduce a matter wave interference scheme based on the quantization of orbital angular momentum in a ring trap. It operates without beam splitters, is sensitive to geometric p…
A fiber-based beam profiler for high-power laser beams in confined spaces and ultra-high vacuum
Christian Brand, Ksenija Simonović, Filip Kiałka +3
Laser beam profilometry is an important scientific task with well-established solutions for beams propagating in air. It has, however, remained an open challenge to measure beam pr…
Massive Unruh particles cannot be directly observed
Filip Kiałka, Alexander R. H. Smith, Mehdi Ahmadi +1
We show that massive particles created in a relativistically accelerated reference frame, as predicted by the Unruh effect, can only be found in a tiny layer above the event horizo…
Effect of relativistic acceleration on continuous variable quantum teleportation and dense coding
Piotr T. Grochowski, Grzegorz Rajchel-Mieldzioć, Filip Kiałka +1
We investigate how relativistic acceleration of the observers can affect the performance of the quantum teleportation and dense coding for continuous variable states of localized w…
Spatial entanglement of nonvacuum Gaussian states
Filip Kiałka, Mehdi Ahmadi, Andrzej Dragan
The vacuum state of a relativistic quantum field contains entanglement between regions separated by spacelike intervals. Such spatial entanglement can be revealed using an operatio…