183 research outputs found
Three-color Sagnac source of polarization-entangled photon pairs
We demonstrate a compact and stable source of polarization-entangled pairs of
photons, one at 810 nm wavelength for high detection efficiency and the other
at 1550 nm for long-distance fiber communication networks. Due to a novel
Sagnac-based design of the interferometer no active stabilization is needed.
Using only one 30 mm ppKTP bulk crystal the source produces photons with a
spectral brightness of 1.13x10^6 pairs/s/mW/THz with an entanglement fidelity
of 98.2%. Both photons are single-mode fiber coupled and ready to be used in
quantum key distribution (QKD) or transmission of photonic quantum states over
large distances.Comment: 7 pages, 4 figure
Untersuchungen zur Wirkung verschiedener Buhnenformen auf die Lebensräume in Buhnfeldern der Elbe
On the Classification of Lattices Over Which Are Even Unimodular -Lattices of Rank 32
We classify the lattices of rank 16 over the Eisenstein integers which are even unimodular -lattices (of dimension 32). There are exactly 80 unitary isometry classes
FYCO1 Increase and Effect of Arimoclomol–Treatment in Human VCP–Pathology
Dominant VCP–mutations cause a variety of neurological manifestations including inclusion body myopathy with early–onset Paget disease and frontotemporal dementia 1 (IBMPFD). VCP encodes a ubiquitously expressed multifunctional protein that is a member of the AAA+ protein family, implicated in multiple cellular functions ranging from organelle biogenesis to ubiquitin–dependent protein degradation. The latter function accords with the presence of protein aggregates in muscle biopsy specimens derived from VCP–patients. Studying the proteomic signature of VCP–mutant fibroblasts, we identified a (pathophysiological) increase of FYCO1, a protein involved in autophagosome transport. We confirmed this finding applying immunostaining also in muscle biopsies derived from VCP–patients. Treatment of fibroblasts with arimoclomol, an orphan drug thought to restore physiologic cellular protein repair pathways, ameliorated cellular cytotoxicity in VCP–patient derived cells. This finding was accompanied by increased abundance of proteins involved in immune response with a direct impact on protein clearaqnce as well as by elevation of pro–survival proteins as unravelled by untargeted proteomic profiling. Hence, the combined results of our study reveal a dysregulation of FYCO1 in the context of VCP–etiopathology, highlight arimoclomol as a potential drug and introduce proteins targeted by the pre–clinical testing of this drug in fibroblasts
Development of Novel Tasks to Assess Outcome-Specific and General Pavlovian-to-Instrumental Transfer in Humans
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