scholarly journals Charge noise induced spin dephasing in a nanowire double quantum dot with spin–orbit coupling

2019 ◽  
Vol 32 (2) ◽  
pp. 025305
Author(s):  
Rui Li (李 睿)
Keyword(s):  
Quantum Dot ◽  
Orbit Coupling ◽  
Double Quantum ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Dephasing ◽  
Double Quantum Dot ◽  
Charge Noise

Fano effect in a T-shaped double quantum dot structure in the presence of Rashba spin–orbit coupling

2008 ◽  
Vol 372 (16) ◽  
pp. 2934-2940 ◽  
Author(s):  
Weijiang Gong ◽  
Yisong Zheng ◽  
Yu Liu ◽  
Francis N. Kariuki ◽  
Tianquan Lü
Keyword(s):  
Quantum Dot ◽  
Orbit Coupling ◽  
Double Quantum ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Fano Effect ◽  
Double Quantum Dot ◽  
Rashba Spin

scholarly journals Observation of spin–orbit coupling induced Weyl points in a two-electron double quantum dot

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Zoltán Scherübl ◽  
András Pályi ◽  
György Frank ◽  
István Endre Lukács ◽  
Gergő Fülöp ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Kondo Effect ◽  
Surface States ◽  
Orbit Coupling ◽  
Double Quantum ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Electronic Band ◽  
Ground State Degeneracy

Abstract Recent years have brought an explosion of activities in the research of topological aspects of condensed-matter systems. Topological phases of matter are accompanied by protected surface states or exotic degenerate excitations such as Majorana modes or Haldane’s localized spinons. Topologically protected degeneracies can, however, also appear in the bulk. An intriguing example is provided by Weyl semimetals, where topologically protected electronic band degeneracies and exotic surface states emerge even in the absence of interactions. Here we demonstrate experimentally and theoretically that Weyl degeneracies appear naturally in an interacting quantum dot system, for specific values of the external magnetic field. These magnetic Weyl points are robust against spin–orbit coupling unavoidably present in most quantum dot devices. Our transport experiments through an InAs double-dot device placed in magnetic field reveal the presence of a pair of Weyl points, exhibiting a robust ground-state degeneracy and a corresponding protected Kondo effect.

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