Grover's search algorithm: An optical approach

P. G. Kwiat, J. R. Mitchell, P. D.D. Schwindt, A. G. White

Research output: Contribution to journalArticlepeer-review


The essential operations of a quantum computer can be accomplished using solely optical elements, with different polarization or spatial modes representing the individual qubits. We present a simple all-optical implementation of Grover's algorithm for efficient searching, in which a database of four elements is searched with a single query. By ‘compiling’ the actual set-up, we have reduced the required number of optical elements from 24 to only 12. We discuss the extension to large databases, and the limitations of these techniques.

Original languageEnglish (US)
Pages (from-to)257-266
Number of pages10
JournalJournal of Modern Optics
Issue number3
StatePublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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