Professor Artur Ekert FRS

Abstract:

Quantum computers use the quantum interference of different computational paths to enhance correct outcomes and suppress erroneous outcomes of computations. A common pattern underpinning quantum algorithms can be identified when quantum computation is viewed as multiparticle interference. We use this approach to review (and improve) some of the existing quantum algorithms and to show how they are related to different instances of quantum phase estimation. We provide an explicit algorithm for generating any prescribed interference pattern with an arbitrary precision. © 1998 The Royal Society.

Abstract:

This is a brief outline of some essential features of quantum computation. We describe sequential quantum data processing and speculate on new modes of quantum computation such as quantum annealing.