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Article

Title: Quantum computing scheme cuts errors

Author: Brown, Chappell Article Type: Product Analysis
Source: Electronic Engineering Times, n1363 p46(1) Publication Date: Mar 21, 2005
  ISSN: 0192-1541
  Illustrations: Charts
URL of Publication: http://www.eet.com

Researchers at the National Institute of Standards (NIST) are proposing a new quantum computer architecture that offers the potential to bridge the gap between the theory and practice of creating quantum logic operations that work. The big problem has been that quantum states tend to generate high error rates, which must then be compensated for by the creation of cumbersome error-correction schemes. An improved architecture could enable the manufacture of quantum computers capable of tolerating high noise levels. The hope of researchers is that the technique known as quantum logic gate construction will enable the development of a fault-tolerant computer architecture. The key parameter in the design of quantum computers is known as error probability per gate (EPG). A related project at NIST seeks to develop quantum teleportation as a kind of data bus for transmitting data between qubit-based buses. The value of this scheme is that a standard von Neumann computer architecture is effected without the presence of an actual physical bus.

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