Readout of a single electron spin based quantum bit by current detection

被引：25
作者：
Ciorga, M [1 ]
Sachrajda, AS
Hawrylak, P
Gould, C
Zawadzki, P
Feng, Y
Wasilewski, Z
机构：
[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
[2] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada
[3] Univ Sherbrooke, CRPS, Sherbrooke, PQ J1K 2R1, Canada
来源：
PHYSICA E | 2001年 / 11卷 / 01期
关键词：
lateral quantum dots; spin polarized injection; current readout;
D O I：
10.1016/S1386-9477(01)00153-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present experimental and theoretical results demonstrating the readout of a single spin based quantum bit by current detection. The quantum bit has been built by isolating a single electron spin in a lateral dot with a tunable number of electrons. The spin state of the dot was read from the current amplitude resulting from the injection of spin polarized electrons. The current amplitude showed a systematic dependence on the spin state of the dot controlled by the number of electrons. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：35 / 40
页数：6
相关论文
共 27 条
  • [1] Electrons in artificial atoms
    Ashoori, RC
    [J]. NATURE, 1996, 379 (6564) : 413 - 419
  • [2] Electron spin and optical coherence in semiconductors
    Awschalom, DD
    Kikkawa, JM
    [J]. PHYSICS TODAY, 1999, 52 (06) : 33 - 38
  • [3] QUANTUM INFORMATION AND COMPUTATION
    BENNETT, CH
    [J]. PHYSICS TODAY, 1995, 48 (10) : 24 - 30
  • [4] Coupled quantum dots as quantum exclusive-OR gate
    Brum, JA
    Hawrylak, P
    [J]. SUPERLATTICES AND MICROSTRUCTURES, 1997, 22 (03) : 431 - 436
  • [5] BUCKARD G, CONDMAT0004182
  • [6] Addition spectrum of a lateral dot from Coulomb and spin-blockade spectroscopy
    Ciorga, M
    Sachrajda, AS
    Hawrylak, P
    Gould, C
    Zawadzki, P
    Jullian, S
    Feng, Y
    Wasilewski, Z
    [J]. PHYSICAL REVIEW B, 2000, 61 (24) : 16315 - 16318
  • [7] QUANTUM COMPUTATION
    DIVINCENZO, DP
    [J]. SCIENCE, 1995, 270 (5234) : 255 - 261
  • [8] QUANTUM-MECHANICAL COMPUTERS
    FEYNMAN, RP
    [J]. FOUNDATIONS OF PHYSICS, 1986, 16 (06) : 507 - 531
  • [9] Injection and detection of a spin-polarized current in a light-emitting diode
    Fiederling, R
    Keim, M
    Reuscher, G
    Ossau, W
    Schmidt, G
    Waag, A
    Molenkamp, LW
    [J]. NATURE, 1999, 402 (6763) : 787 - 790
  • [10] Spin-valve effects in a semiconductor field-effect transistor: A spintronic device
    Gardelis, S
    Smith, CG
    Barnes, CHW
    Linfield, EH
    Ritchie, DA
    [J]. PHYSICAL REVIEW B, 1999, 60 (11): : 7764 - 7767
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