dorsal/arxiv
View SchemaQuantum computers can search arbitrarily large databases by a single query
| Authors | Lov K. Grover |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9706005 |
| URL | https://arxiv.org/abs/quant-ph/9706005 |
| DOI | 10.1103/PhysRevLett.79.4709 |
Abstract
This paper shows that a quantum mechanical algorithm that can query information relating to multiple items of the database, can search a database in a single query (a query is defined as any question to the database to which the database has to return a (YES/NO) answer). A classical algorithm will be limited to the information theoretic bound of at least O(log N) queries (which it would achieve by using a binary search).
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"abstract": "This paper shows that a quantum mechanical algorithm that can query\ninformation relating to multiple items of the database, can search a database\nin a single query (a query is defined as any question to the database to which\nthe database has to return a (YES/NO) answer). A classical algorithm will be\nlimited to the information theoretic bound of at least O(log N) queries (which\nit would achieve by using a binary search).",
"arxiv_id": "quant-ph/9706005",
"authors": [
"Lov K. Grover"
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"doi": "10.1103/PhysRevLett.79.4709",
"title": "Quantum computers can search arbitrarily large databases by a single query",
"url": "https://arxiv.org/abs/quant-ph/9706005"
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