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2015 Fiscal Year Final Research Report

Design and Implementation of High-Fidelity Quantum Gates without Feedback

Research Project

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Project/Area Number 25400422
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Atomic/Molecular/Quantum electronics
Research InstitutionKinki University

Principal Investigator

KONDO Yasushi  近畿大学, 理工学部, 教授 (40330229)

Co-Investigator(Kenkyū-buntansha) NAKAHARA Mikio  近畿大学, 理工学部, 教授 (90189019)
Co-Investigator(Renkei-kenkyūsha) MIZUOCHI Norikazu  大阪大学, 基礎工学部, 准教授 (00323311)
ICHIKAWA Tsubasa  学習院大学, 理学部, 研究員 (50572658)
Project Period (FY) 2013-04-01 – 2016-03-31
Keywords量子制御 / 量子情報 / 量子コンピュータ / 複合量子ゲート / 量子誤り訂正符号 / NMR
Outline of Final Research Achievements

Composite quantum gates made of possibly poor-quality ones can be made robust against systematic errors without feedback control. Very precise quantum gates are proposed by adding feedback control on these composite quantum gates. Therefore, composite quantum gates are important in order to realize precise quantum control.
We proposed a new and intuitive method how to design such composite quantum gates and applied these in order to demonstrate a quantum Zeno effect. Moreover, we demonstrated a simple yet interesting quantum error correction scheme and proposed a new quantum system of neutral atoms for a quantum computer. We also proposed and demonstrated a selective 2-qubit gate for NMR quantum computer
experiments.

Free Research Field

数物系科学

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Published: 2017-05-10  

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