Coherent Single Electron Spin Control in a Slanting Zeeman Field

Tokura, Yasuhiro and Wiel van der, Wilfred G. and Obata, Toshiaki and Tarucha, Seigo (2006) Coherent Single Electron Spin Control in a Slanting Zeeman Field. Physical Review Letters, 96 (4). 047202. ISSN 0031-9007

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Abstract:	We consider a single electron in a 1D quantum dot with a static slanting Zeeman field. By combining the spin and orbital degrees of freedom of the electron, an effective quantum two-level (qubit) system is defined. This pseudospin can be coherently manipulated by the voltage applied to the gate electrodes, without the need for an external time-dependent magnetic field or spin-orbit coupling. Single-qubit rotations and the controlled-NOT operation can be realized. We estimated the relaxation (T1) and coherence (T2) times and the (tunable) quality factor. This scheme implies important experimental advantages for single electron spin control.
Item Type:	Article
Copyright:	© 2006 American Physical Society
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Nano-Electronics (NE)
Link to this item:	http://purl.utwente.nl/publications/59088
Official URL:	http://dx.doi.org/10.1103/PhysRevLett.96.047202
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