Unitary-Invariant Witnesses of Quantum Imaginarity.

Quantum theory is traditionally formulated using complex numbers. This imaginarity of quantum theory has been quantified as a resource with applications in discrimination tasks, pseudorandomness generation, and quantum metrology. In the standard formulation, a quantum state is said to have "imaginarity" if the associated density matrix is not real-valued in a given, fixed basis.

Experimental certification of contextuality, coherence, and dimension in a programmable universal photonic processor.

Quantum superposition of high-dimensional states enables both computational speed-up and security in cryptographic protocols. However, the exponential complexity of tomographic processes makes certification of these properties a challenging task. In this work, we experimentally certify coherence witnesses tailored for quantum systems of increasing dimension using pairwise overlap measurements enabled by a six-mode universal photonic processor fabricated with a femtosecond laser writing technology.

[Intoxications in Children and Adolescents in Germany].

Background: In Germany, intoxications cause the bulk of emergencies in children, to be prevented or attenuated by preventive measures. Therefore, knowledge about intoxications is essential for pediatricians. The present work provides general and epidemiologic data about intoxications and most frequent categories and single toxicants.

Pediatric plant exposures in Germany, 1998-2004.

Introduction: Each year, 80,000 to 100,000 calls to the Poison Information Centres (PIC) concern pediatric exposures in Germany. Plant exposures are the fourth most common category, accounting for 22% of pediatric exposures.

Methods: Information on plant exposures in children (0-14 years) was collected from annual reports of German PIC.