Gated combo nanodevice for sequential operations on single electron spin

Details Gated combo nanodevice for sequential operations on single electron spin Gated combo nanodevice for sequential operations on single electron spin

2008-09-24

arxiv.org/abs/0809.4195v1

2009 Nanotechnology 20 065402

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1088/0957-4484/20/6/065402

An idea for a nanodevice in which an arbitrary sequence of three basic quantum single qubit gates - negation, Hadamard and phase shift - can be performed on a single electron spin. The spin state is manipulated using the spin-orbit coupling and the electron trajectory is controlled by the electron wave function self-focusing mechanism due to the electron interaction with the charge induced on metal gates. We present results of simulations based on iterative solution of the time dependent Schr\"odinger equation in which the subsequent operations on the electron spin can be followed and controlled. Description of the moving electron wave packet requires evaluation of the electric field within the entire nanodevice in each time step.

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