Quantum advantage without entanglement
Quantum advantage without entanglement
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DOI:
10.1117/12.617175
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发表时间:
2005-08
期刊:
影响因子:
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通讯作者:
D. Kenigsberg;T. Mor;Gil Ratsaby
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文献类型:
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作者:
D. Kenigsberg;T. Mor;Gil Ratsaby
We study the advantage of pure-state quantum computation without entanglement over classical computation. For the Deutsch-Jozsa algorithm we present the maximal subproblem that can be solved without entanglement, and show that the algorithm still has an advantage over the classical ones. We further show that this subproblem is of greater significance, by proving that it contains all the Boolean functions whose quantum phase-oracle is non-entangling. For Simon's and Grover's algorithms we provide simple proofs that no non-trivial subproblems can be solved by these algorithms without entanglement.