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Multi-object searching algorithm using subgrouped oracles | | Jin-Yuan Hsieh
; Che-Ming Li
; Der-San Chuu
; | | Date: |
28 May 2002 | | Subject: | quant-ph | | Abstract: | We present in this work, if a set of well organized suboracles is available, an algorithm for multiobject search with certainty in an unsorted database of $N$ items. Depending on the number of the objects, the technique of phase tunning is included in the algorithm. If one single object is to be searched, this algorithm performs a factor of two improvement over the best algorithm for a classical sorted database. While if the number of the objects is larger than one, the algorithm requires slightly less than $log_{4}N$ queries, but no classical counterpart exists since the resulting state is a superposition of the marked states. | | Source: | arXiv, quant-ph/0205175 | | Services: | Forum | Review | PDF | Favorites | |
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