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We present experimental results on laser-induced photoemission from nanotips made of different materials, and we compare photoemission from a metal surface (tungsten) to a dielectric (diamond). Ultrashort laser pulses (15–300 fs) are used to trigger electron emission from nanotips with radii < 100nm under a moderate tip bias. We show how different laser parameters as the repetition rate, the mean...
In this work, we use wavefront shaping methods to control non-classical states of light propagating through a multiply scattering medium. We experimentally show guiding of a single-photon into a selected single-mode fiber after propagation through the medium, and demonstrate generation of a one-photon entangled state.
We report on trapping of single Ytterbium ions in the focal spot of a deep parabolic mirror providing a setup for efficient free space photon atom coupling. Additionally issues regarding imaging, ion localization and fluorescence collection are discussed.
The interaction of light and matter at the level of a single quantum has been the subject of many research efforts, and gained momentum during the last decade. This is mainly due to the promising progress in the field but also due to proposals for applications such as quantum repeaters or hybrid quantum communication protocols. For experiments involving single quantum systems and their interaction...
Today the interaction of light and matter on the single quantum level is a wide research field. Strong coupling between a single photon and a single atom has already been achieved with optical cavities. Here, we treat strong interaction in free space, i.e. strong interaction whilst maintaining the free space density of states of the electromagnetic field. We pursue the coupling of a properly designed...
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