Superposition, entanglement and quantum computation

  • Authors:
  • T. M. Forcer;A. J. G. Hey;D. A. Ross;P. G. R. Smith

  • Affiliations:
  • Department of Electronics and Computer Science, University of Southampton, Southampton, UK;Department of Electronics and Computer Science, University of Southampton, Southampton, UK;Department of Physics and Astronomy, University of Southampton, Southampton, UK;Department of Electronics and Computer Science, University of Southampton, Southampton, UK

  • Venue:
  • Quantum Information & Computation
  • Year:
  • 2002

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Abstract

The paper examines the roles played by superposition and entanglement in quantum computing. The analysis is illustrated by discussion of a 'classical' electronic implementation of Grover's quantum search algorithm. It is shown explicitly that the absence of multi-particle entanglement leads to exponentially rising resources for implementing such quantum algorithms.