Quantum zero-error algorithms cannot be composed

被引：1
|
作者：
Buhrman, H
de Wolf, R
机构：
[1] CWI, NL-1098 SJ Amsterdam, Netherlands
[2] Univ Amsterdam, NL-1098 SJ Amsterdam, Netherlands
来源：
INFORMATION PROCESSING LETTERS | 2003年 / 87卷 / 02期
关键词：
analysis of algorithms; quantum computing; zero-error computation;
D O I：
10.1016/S0020-0190(03)00254-0
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We exhibit two black-box problems, both of which have an efficient quantum algorithm with zero-error, yet whose composition does not have an efficient quantum algorithm with zero-error. This shows that quantum zero-error algorithms cannot be composed. In oracle terms, we give a relativized world where ZQP(ZQP) not equal ZQP, while classically we always have ZPP(ZPP) = ZPP. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：79 / 84
页数：6
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