Coherence as a Resource for Shor's Algorithm.

Shor's factoring algorithm provides a superpolynomial speedup over all known classical factoring algorithms. Here, we address the question of which quantum properties fuel this advantage. We investigate a sequential variant of Shor's algorithm with a fixed overall structure and identify the role of coherence for this algorithm quantitatively.

[Emergency medicine yesterday].

It was only during the early sixties that emergency medicine started developing both world wide and especially in Germany. Although it had been realised already in the 19 th century that absence of treatment for a period after infliction of a wound had a crucial effect on recovery, and in spite of the fact that in 1938 Kirschner had stressed the need for preclinical medical care, results of research on the pathophysiology of sudden death were not available until 1960. At the same time it became possible to develop measures and methods enabling to preserve the vital functions essential for survival already at the site of an accident and during transportation or to restore them after circulatory arrest.