A spin quantum bit with ferromagnetic contacts for circuit QED

Details A spin quantum bit with ferromagnetic contacts for circuit QED A spin quantum bit with ferromagnetic contacts for circuit QED

2010-05-11

arxiv.org/abs/1005.1901v2

Phys.Rev.Lett.105:160502,2010

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.105.160502

We theoretically propose a scheme for a spin quantum bit based on a double quantum dot contacted to ferromagnetic elements. Interface exchange effects enable an all electric manipulation of the spin and a switchable strong coupling to a superconducting coplanar waveguide cavity. Our setup does not rely on any specific band structure and can in principle be realized with many different types of nanoconductors. This allows to envision on-chip single spin manipulation and read-out using cavity QED techniques.

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