Implementation of a Quantum Algorithm to Solve Deutsch's Problem on a Nuclear Magnetic Resonance Quantum Computer

We demonstrate the use of an NMR quantum computer based on the pyrimidine base cytosine, and the implementation of a quantum algorithm to solve Deutsch's problem.Comment: 16 pages including 6 figures. Minor clarifications as requested by the referee plus updated references. Journal of Chemical Physics, in press (expected publication date August 1st 1998

Introduction

EnThe purpose of this article is to begin writing the history of the concept of natural monopoly.In economics natural monopoly is described as a situation in which,for structural reasons,only one firm finds it profitable to produce in the market.The following features which go to make up the notion of natural monopoly are identified:1.the expression itself;2.the singling out of concrete situations to which it is applied;3.the inquiry into economies of scale;4.the consideration of their compatibility with competition;5.the drawing of the diagram;6.the request for Government intervention. In this paper each of the above features is separately examined from a historical perspective,highlighting the originality of economic theories in that specific respect,as well as their historical influence