Single quantum querying of a database

Journal article (1998)

Authors

B.M. Terhal Universiteit van Amsterdam
John A. Smolin IBM Thomas J. Watson Research Centre
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Published Date

1998

Language

English

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Abstract

We present a class of fast quantum algorithms, based on Bernstein and Vazirani’s parity problem, that retrieves the entire contents of a quantum database [Formula Presented] in a single query. The class includes binary search problems and coin-weighing problems. We compare the efficiency of these quantum algorithms with the classical algorithms that are bounded by the classical information-theoretic bound. We show the connection between classical algorithms based on several compression codes and our quantum-mechanical method.