优化oracle和扩散算子实现,增强量子搜索性能

IF 4.6 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Tarun Kumar , Dilip Kumar , Gurmohan Singh
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引用次数: 0

摘要

使用Grover搜索算法(GSA)在非结构化数据库中搜索项目,与传统方法相比,保证了速度的二次提高。实现GSA的挑战之一是需要大量的门,这可能是资源密集型的,而且容易出错。本文提出了一种新的GSA优化方法,通过减少oracle和扩散算子的门数和电路深度来最小化GSA的复杂度。与标准版本相比,优化GSA的3、4和5量子位实现的门数和电路深度分别减少了47%和49%。此外,利用优化后的GSA在量子数据库中搜索索引|111 >。结果还表明,3、4和5量子位实现的准确性和执行时间都有显着提高,并且与标准GSA相比,使用优化的GSA搜索量子数据库也有显着提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Optimized oracle and diffusion operator implementations for enhanced quantum search performance

Optimized oracle and diffusion operator implementations for enhanced quantum search performance
Searching for an item in an unstructured database with Grover's search algorithm (GSA) guarantees a quadratic improvement in speed compared to classical approaches. One of the challenges in implementing GSA is the need for a large number of gates, which can be resource-intensive and error-prone. This paper presents a novel optimization of GSA that minimizes the complexity by reducing the gate count and circuit depth of the oracle and diffusion operator. A 47 % and 49 % reduction in gate count and circuit depth is observed for the 3-, 4-, and 5-qubit implementations of the optimized GSA against the standard version. Furthermore, the optimized GSA is utilized to perform a search in a quantum database for the index of |111. The results also indicate a significant improvement in the accuracy and execution time for the 3-, 4-, and 5-qubit implementations, and for searching a quantum database with the optimized GSA against the standard GSA.
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来源期刊
Chinese Journal of Physics
Chinese Journal of Physics 物理-物理:综合
CiteScore
8.50
自引率
10.00%
发文量
361
审稿时长
44 days
期刊介绍: The Chinese Journal of Physics publishes important advances in various branches in physics, including statistical and biophysical physics, condensed matter physics, atomic/molecular physics, optics, particle physics and nuclear physics. The editors welcome manuscripts on: -General Physics: Statistical and Quantum Mechanics, etc.- Gravitation and Astrophysics- Elementary Particles and Fields- Nuclear Physics- Atomic, Molecular, and Optical Physics- Quantum Information and Quantum Computation- Fluid Dynamics, Nonlinear Dynamics, Chaos, and Complex Networks- Plasma and Beam Physics- Condensed Matter: Structure, etc.- Condensed Matter: Electronic Properties, etc.- Polymer, Soft Matter, Biological, and Interdisciplinary Physics. CJP publishes regular research papers, feature articles and review papers.
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