Puertas lógicas en ordenadores cuánticos, o "la raíz cuadrada de NO".

Artículo que explica en qué consiste un computador cuántico, ¡en términos inteligibles! (al menos, para un informático clásico).

American Scientist Online - The Square Root of NOT

Logic Gates

Conventional computers are built out of Boolean logic gates, notably those that implement the logic functions AND, OR and NOT. What are the corresponding primitive elements of a quantum computer? These building blocks too can be conceived as logic gates, but they operate on a very different kind of logic, in which probabilities play a crucial role. What follows is a sketch of the ideas underlying the construction of quantum logic gates. It is based on a lucid expository article by Gilles Brassard of the Université de Montreal (9) and on a talk that Shor delivered in March at the University of Maryland Baltimore County.