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Quantum linear system algorithm applied to communication systems

Authors
Park, JeonghoonHeo, Jun
Issue Date
28-7월-2022
Publisher
SPRINGER
Keywords
Quantum linear system algorithm; Read-out problem; MIMO detection
Citation
QUANTUM INFORMATION PROCESSING, v.21, no.7
Indexed
SCIE
SCOPUS
Journal Title
QUANTUM INFORMATION PROCESSING
Volume
21
Number
7
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143842
DOI
10.1007/s11128-022-03598-3
ISSN
1570-0755
Abstract
A quantum linear system algorithm (QLSA) can solve linear equations more efficiently than classical ones. However, we cannot know the value of each component of a solution directly because a QLSA produces a solution as a quantum state. In this paper, we present a method to obtain classical information of a solution with the exponential quantum advantage of a QLSA when the values of a solution are on a rectangular grid in the complex plane. Our method can extract both the amplitude and phase information by modifying the given matrix. Moreover, we show an application to a specific problem in communication systems.
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HEO, JUN
공과대학 (전기전자공학부)
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