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- Friedrich Schiller University JenaDE407 papers
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25 papers · 1 filter
Back-reflection in dipole fields and beyond
Maksim Valialshchikov, Felix Karbstein, Daniel Seipt +1
Quantum reflection is a fascinating signature of the quantum vacuum that emerges from inhomogeneities in the electromagnetic fields. In pursuit of the prospective real-world implem…
Engineering of maximally entangled orbital angular momentum states via path identity
Richard Bernecker, Baghdasar Baghdasaryan, Stephan Fritzsche
Cutting-edge quantum technologies lean on sources of high-dimensional entangled states (HDES) that reliably prepare high-fidelity target states. The idea to overlap photon paths fr…
High-dimensional maximally entangled photon pairs in parametric down-conversion
Richard Bernecker, Baghdasar Baghdasaryan, Stephan Fritzsche
Photon pairs generated from spontaneous parametric down-conversion are a well-established method to realize entangled bipartite photonic systems. Laguerre-Gaussian modes, which car…
Collective nuclear excitation and pulse propagation in single-mode x-ray waveguides
Leon M. Lohse, Petar Andrejić, Sven Velten +8
Waveguides offer a means to controllably couple atomic ensembles to the electromagnetic field therein. Here, we demonstrate x-ray propagation in planar thin-film waveguides coupled…
Spatial and temporal characteristics of spontaneous parametric down-conversion with varying focal planes of interacting beams
Richard Bernecker, Baghdasar Baghdasaryan, Stephan Fritzsche
Spontaneous parametric down-conversion (SPDC) is a widely used process to prepare entangled photon pairs. In SPDC, a second-order nonlinear crystal is pumped by a coherent laser be…
Maximizing the Validity of the Gaussian Approximation for the biphoton State from Parametric Downconversion
Baghdasar Baghdasaryan, Fabian Steinlechner, Stephan Fritzsche
Spontaneous parametric down-conversion (SPDC) is widely used in quantum applications based on photonic entanglement. The efficiency of photon pair generation is often characterized…