Gate-controlled unitary operation on flying spin qubits in quantum Hall edge states
Gate-controlled unitary operation on flying spin qubits in quantum Hall edge states
复制标题
量子霍尔边缘态飞行自旋量子位的门控酉运算
DOI:
10.1103/physrevb.102.235302
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发表时间:
2020
影响因子:
3.7
通讯作者:
Katsumoto Shingo
中科院分区:
文献类型:
--
作者:
Shimizu Takase;Nakamura Taketomo;Hashimoto Yoshiaki;Endo Akira;Katsumoto Shingo
The spin and orbital freedoms of electrons traveling on spin-resolved quantum Hall edge states (quantum Hall ferromagnets) are maximally entangled. The unitary operations on these two freedoms are hence equivalent, which means that one can manipulate the spins with nonmagnetic methods through the orbitals. Taking the quantization axis of the spins along the magnetization axis, the zenith angle is determined by the partition rate of spin-separated edges, while the azimuth angle is defined as the phase difference between the edges. Utilizing these properties, we have realized an electrically controlled unitary operation on the electron spins on quantum Hall ferromagnets. The zenith angle of the spin was controlled through the radius of gyration at a corner by applying voltage to a thin gate placed at one edge. The subsequent rotation in the azimuth angle was controlled via the distance between the edge channels also by a gate voltage. The combination of the two operations constitutes a systematic electric operation on spins in quantum Hall edge channels.
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影响因子:
3.7
作者:
E. Deviatov;A. Ganczarczyk;A. Lorke;G. Biasiol;L. Sorba
通讯作者:
L. Sorba
影响因子:
3.7
作者:
V. Giovannetti;F. Taddei;D. Frustaglia;R. Fazio
通讯作者:
R. Fazio
影响因子:
1.2
作者:
G. Brassard;A. A. Méthot-A.
通讯作者:
G. Brassard;A. A. Méthot-A.
DOI:
--
发表时间:
2006
期刊:
Appl.Phys.Lett. 89
影响因子:
--
作者:
Kazuhiko Mishima;Yukinari Kato(double first);K.Sugihara;K.Hamaya;H.Takahashi;K.Hamaya;K.Hamaya;S.Masubuchi
通讯作者:
S.Masubuchi
影响因子:
1.8
作者:
Deviatov, E. V.;Egorov, S. V.;Sorba, L.
通讯作者:
Sorba, L.