TY - JOUR
T1 - Single-electron spin resonance in a g-factor-controlled semiconductor quantum dot
AU - Kutsuwa, Takeshi
AU - Kuwahara, Makoto
AU - Ono, Keiji
AU - Kosaka, Hideo
N1 - Funding Information:
This work was supported by CREST-JST, SCOPE-MIC, ERATO-JST.
Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/2
Y1 - 2010/2
N2 - We demonstrate that a single electron spin in a quantum dot, of which g-factor is tuned to nearly zero, is coherently manipulated by the local gate operation. A nearly zero electron g-factor is essential for the quantum state transfer from a photon to an electron spin and ideal for long electron spin memory. The g-factor was tuned by replacing the single heterostructure, which forms the conventional quantum dot, into a single quantum well with a proper electron confinement. The obtained electron g-factor was about 0.05, which is consistent with the optically estimated g-factor. We also demonstrate that the Rabi oscillation was maintained for more than 1.5 μs.
AB - We demonstrate that a single electron spin in a quantum dot, of which g-factor is tuned to nearly zero, is coherently manipulated by the local gate operation. A nearly zero electron g-factor is essential for the quantum state transfer from a photon to an electron spin and ideal for long electron spin memory. The g-factor was tuned by replacing the single heterostructure, which forms the conventional quantum dot, into a single quantum well with a proper electron confinement. The obtained electron g-factor was about 0.05, which is consistent with the optically estimated g-factor. We also demonstrate that the Rabi oscillation was maintained for more than 1.5 μs.
KW - Electron spin
KW - Electron spin resonance
KW - Quantum dots
KW - Quantum well
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U2 - 10.1016/j.physe.2009.11.026
DO - 10.1016/j.physe.2009.11.026
M3 - Article
AN - SCOPUS:76949085841
VL - 42
SP - 821
EP - 824
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 4
ER -