Regensburg 2010 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 18: TR: Quantum Coherence and Quantum Information Systems 1
TT 18.7: Vortrag
Dienstag, 23. März 2010, 15:45–16:00, H21
Ferromagnetic spin quantum bits — •Audrey Cottet1,2 and Takis Kontos1,2 — 1Ecole Normale Supérieure, Laboratoire Pierre Aigrain, 24 rue Lhomond, F-75231 Paris Cedex 05, France — 2CNRS UMR 8551, Laboratoire associé aux Universités Pierre et Marie Curie et Denis Diderot, France
We propose theoretically a scheme for implementing a spin quantum bit in a quantum dot circuit with ferromagnetic leads. This setup does not rely on any specific band structure and therefore can be realized with many different types of nanoconductors. In this talk, we will discuss its implementation with carbon nanotubes. We can reach the strong coupling limit between the electron spin and a superconducting photon cavity, with experimentally realistic parameters compatible with a slow enough decoherence of the spin quantum state. This allows us to envision the use of circuit cavity quantum electrodynamics methods for single spin manipulation and readout.