293 citations · 1.6k across the 43 of their papers we have counts for
5 papers · 1 filter
Compact embedded device for lock-in measurements and experiment active control
Marcelo Alejandro Luda, Martin Drechsler, Christian Tomás Schmiegelow +1
We present a multi-purpose toolkit for digital processing, acquisition and feedback control designed for physics labs. The kit provides in a compact device the functionalities of s…
Excitation of E1-forbidden Atomic Transitions with Electric, Magnetic or Mixed Multipolarity in Light Fields Carrying Orbital and Spin Angular Momentum
Maria Solyanik-Gorgone, Andrei Afanasev, Carl E. Carlson +2
Photons carrying a well-defined orbital angular momentum have been proven to modify spectroscopic selection rules in atomic matter. Excitation profiles of electric quadrupole trans…
A spin heat engine coupled to a harmonic-oscillator flywheel
David von Lindenfels, Oliver Gräb, Christian T. Schmiegelow +6
We realize a heat engine using a single electron spin as a working medium. The spin pertains to the valence electron of a trapped Ca ion, and heat reservoirs are emulate…
Bessel beams revisited: a generalized scheme to derive optical vortices
G. F. Quinteiro, C. T. Schmiegelow, D. E. Reiter +1
The electromagnetic field of optical vortices is in most cases derived from vector and scalar potentials using either a procedure based on the Lorenz or the Coulomb gauge. The form…
Challenging local realism with human choices
The BIG Bell Test Collaboration, C. Abellán, A. Acín +105
A Bell test is a randomized trial that compares experimental observations against the philosophical worldview of local realism. A Bell test requires spatially distributed entanglem…