Swap operation in the presence of Zeeman inhomogeneity in coupled quantum dots

被引：3
|
作者：
Zhou, Yue [1 ]
Zhang, Guo-Feng [2 ,3 ]
机构：
[1] Beijing Forestry Univ, Sch Sci, Dept Phys & Elect, Beijing 100083, Peoples R China
[2] Beihang Univ, Sch Phys & Nucl Energy Engn, Dept Phys, Being 100191, Peoples R China
[3] Beihang Univ, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2014年 / 178卷
基金：
中国国家自然科学基金;
关键词：
Quantum dot; Swap operation; Fidelity; COHERENT MANIPULATION; ERROR-CORRECTION; FIDELITY; SPINS;
D O I：
10.1016/j.ssc.2013.10.024
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this paper, we study the effects of inhomogeneous magnetic field on the swap operation, which is a fundamental component to construct universal quantum circuits. The lower bound of the operation fidelity is given. The scheme to perform the ideal swap operation and its square root is investigated. It is shown that the strength of the exchange coupling should satisfy some discrete values. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：28 / 32
页数：5
相关论文
共 50 条
  • [41] Zeeman coupling and Swap action in spin-based diluted magnetic semiconductor quantum dot quantum computer
    Hichri, A
    Jaziri, S
    PHYSICA STATUS SOLIDI C: MAGNETIC AND SUPERCONDUCTING MATERIALS, PROCEEDINGS, 2004, 1 (07): : 1976 - 1980
  • [42] Time-dependent configuration-interaction simulations of spin swap in spin-orbit-coupled double quantum dots
    Nowak, M. P.
    Szafran, B.
    PHYSICAL REVIEW B, 2010, 82 (16)
  • [43] Molecular phases in coupled quantum dots
    Rontani, M
    Amaha, S
    Muraki, K
    Manghi, F
    Molinari, E
    Tarucha, S
    Austing, DG
    PHYSICAL REVIEW B, 2004, 69 (08)
  • [44] Coupled Quantum Dots in Bilayer Graphene
    Eich, Marius
    Pisoni, Riccardo
    Pally, Alessia
    Overweg, Hiske
    Kurzmann, Annika
    Lee, Yongjin
    Rickhaus, Peter
    Watanabe, Kenji
    Taniguchi, Takashi
    Ensslin, Klaus
    Ihn, Thomas
    NANO LETTERS, 2018, 18 (08) : 5042 - 5048
  • [45] Linear chain of coupled quantum dots
    Kang, K
    Cha, MC
    Yang, SRE
    PHYSICAL REVIEW B, 1997, 56 (08) : R4344 - R4347
  • [46] Electronic properties of coupled quantum dots
    Machowska-Podsiadlo, E.
    Maczka, M.
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2008, 40 (05): : 1748 - 1750
  • [47] Anomalous polarization in coupled quantum dots
    Xu, XH
    Jiang, H
    Fu, RT
    Sun, X
    ACTA PHYSICA SINICA, 2000, 49 (03) : 426 - 429
  • [48] Excitonic clusters in coupled quantum dots
    Filinov, AV
    Bonitz, M
    Lozovik, YE
    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2003, 36 (22): : 5899 - 5904
  • [49] Anomalous polarization in coupled quantum dots
    Xu, XH
    Jiang, H
    Sun, X
    Lin, HQ
    PHYSICA B, 2000, 279 (1-3): : 214 - 216
  • [50] Detecting the chirality for coupled quantum dots
    Cao, Hui-Juan
    Hu, Lian
    PHYSICS LETTERS A, 2008, 372 (17) : 2971 - 2975
12345