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A spin quantum bit with ferromagnetic contacts for circuit QED

By Audrey Cottet


We theoretically propose a scheme for a spin quantum bit based on a double quantum dot contacted to ferromagnetic elements [1]. Interface exchange effects enable an all electric manipulation of the spin and a switchable strong coupling to a superconducting coplanar waveguide cavity. This allows to envision on‐chip single spin manipulation and read‐out using cavity QED techniques. Our setup does not rely on any specific band structure and can in principle be realized with many different types of nanoconductors. We discuss in particular the case of an implementation with carbon nanotubes. [1] A. Cottet and T. Kontos, arXiv:1005.190

Publisher: HAL CCSD
Year: 2010
OAI identifier: oai:HAL:hal-00521604v1
Provided by: Hal-Diderot
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