Computing with Schrödinger's cat - What is a quantum computer and what do I need it for?

In this lecture, we will delve into the fascinating world of quantum computers. A topic that lies at the interface between modern physics and computer science. First, we will look at how modern classical computers work and why their rapid development forms the basis of our digital society.

Then we want to understand the fundamental properties of quantum physics: 1) particles suddenly behave like waves, 2) energy and momentum only exist in small portions: the quanta, and 3) Einstein's "spooky action at a distance" connects particles even over large distances.

In the quantum computer, we are now using precisely these properties to build better computers. But what does "better" mean? And how exactly do these computers work? And will I have to buy a quantum computer in the near future?

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