Certainty from uncertainty
Article Abstract:
The operations of quantum computers are discussed. Quantum mechanics is commonly associated with the uncertainty principle. However, quantum effects within a computer can be used to arrive quickly and with complete certainty at solutions to problems that ordinary computers can arrive at slowly and with a small margin of error. The extra power of quantum computers is derived form the ability of a quantum system to be at many places at the same time when it is not being observed. A discussion of how the interference among different computational paths produces a final output is presented.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Quantum information and computation
Article Abstract:
It is now clear that a fully quantum theory of information and information processing presents a type of cryptography with security resting on basic physics, along with a reasonable hope of developing quantum computers that could significantly accelerate the solution of some mathematical problems. It is now recognized that an information theory based on quantum principles extends and completes classical information theory. There are some large obstacles to immediately beginning large-scale quantum computation, but these are probably not insurmountable.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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Towards an engineering era?
Article Abstract:
Participants discussed the potential of quantum mechanics in computers in a Jun 25-Jul 7, 1995 workshop at Institute of Scientific Interchange, Turin, Italy . Experimental successes achieved in quantum logic gates and algorithms were discussed. Innovations in atomic spectroscopy and especially a technique called dark-state transfer of Zeeman coherence were the basis of the techniques of implementing quantum logic in computing. A hypothetical experimental model of a quantum computer was presented based on the results of quantum logic gates.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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