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Accueil du site > LPCNO > Séminaires > 2013 > Spin Noise Spectroscopy : From 3D to 0D Systems

Spin Noise Spectroscopy : From 3D to 0D Systems

Date : 04/04/2013 à 14:00

Titre : Spin Noise Spectroscopy : From 3D to 0D Systems

Intervenant : Jens Hübner

Provenance : Institute for Solid State Physics - Department Nanostructures, Univeristy of Hannover, Germany

Salle : Salle de Séminaire

Résumé : Spin noise spectroscopy (SNS) is a quantum optical spectroscopic technique which promises to gain insight into the conceivable complex dynamic of carrier spins in semiconductors without taking any significant influence onto the measured systems. It originates from atom optics and is based on probe-only, below band-gap Faraday rotation measurements. Thereby, instead of measuring the relaxation time of the system towards thermodynamic equilibrium triggered by a traditional pump sequence, SNS nourishes itself only from the noise of the stochastically oriented carrier spins.

I will review the basic principles of SNS and their successful application to semiconductors and semiconductor nanostructures with a special focus on our very recent experiments on the spin dynamics in ZnO and of singly charged quantum dots in the realm of quantum information processing.

[1] Georg M. Müller, Michael Oestreich, Michael Römer, and Jens Hübner (Review), ”Semiconductor spin noise spectroscopy : Fundamentals, accomplishments, and challenges“, Physica E 43, 569 (2010).

[2] R. Dahbashi, et al., “Measurement of heavy-hole spin dephasing in (InGa)As quantum dots”, Appl. Phys. Lett. 100, 031906 (2012).

[3] H. Horn, A. Balocchi, X. Marie, A. Bakin, A. Waag, M. Oestreich, and J. Hübner, ”Spin noise spectroscopy of donor-bound electrons in ZnO”, Phys. Rev. B 87, 045312 (2013).