Characterizing error propagation in quantum circuits: the Isotropic Index
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- 作者：André L. Fonseca de Oliveira ; Efrain Buksman ; Ilan Cohn…
- 关键词：Quantum error propagation ; Quantum isotropic errors ; Quantum Isotropic Index ; Quantum algorithms
- 刊名：Quantum Information Processing
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：16
- 期：2
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics;
- 出版者：Springer US
- ISSN：1573-1332
- 卷排序：16
文摘
This paper presents a novel index in order to characterize error propagation in quantum circuits by separating the resultant mixed error state in two components: an isotropic component that quantifies the lack of information, and a disalignment component that represents the shift between the current state and the original pure quantum state. The Isotropic Triangle, a graphical representation that fits naturally with the proposed index, is also introduced. Finally, some examples with the analysis of well-known quantum algorithms degradation are given.