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A: Fachverband Atomphysik

A 18: Attosecond physics I

A 18.1: Hauptvortrag

Dienstag, 13. März 2012, 14:00–14:30, V47.03

Ultrafast Quantum Photonics — •Alfred Leitenstorfer — Department of Physics and Center for Applied Photonics, University of Konstanz, Konstanz, Germany

This talk provides an overview of our efforts to investigate condensed-matter systems and light down to the molecular level of single electrons and photons, with direct access to the electric field amplitude and sub-cycle precision. First, ultrabroadband femtosecond fiber lasers are introduced as an enabling technology for ultrafast quantum photonics [1]. In the following, femtosecond experiments on single semiconductor quantum dots are featured [2]. Via broadband enhancement of light-matter coupling e.g. with plasmonic nanoantennas [3], we are aiming at a precise control of the photon number of ultrashort pulses. The third part discusses the field of multi-terahertz physics where new regimes for quantum optics [4] and a nonlinear access to low-energy excitations of complex matter [5] are currently arising.

[1] G. Krauss et al., Nature Photon. 4, 33 (2010)

[2] F. Sotier et al., Nature Phys. 5, 352 (2009)

[3] T. Hanke et al., Phys. Rev. Lett. 103, 257404 (2009)

[4] G. Günter et al., Nature 458, 178 (2009)

[5] T. Kampfrath et al., Nature Photon. 5, 31 (2011)