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Similar to surfers using the energy stored in sea waves to drive their motion towards the coast, elementary particles can surf a wave formed by tailored light fields. In a paper just published in Nature Physics, we have shown that the kinetic energy of electrons can be modulated on very short timescales by the interaction with an optical travelling wave.

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“How fast can one turn on a current?” is a fundamentally important question behind boosting up the speed of modern electronics, since the data and signals are transferred via the flow of electrons. In joint work with the group of Prof. Heiko B. Weber of FAU's Applied Physics Chair, we have opened up a new channel for achieving ultrafast turning-on of currents in graphene, an exotic conducting material, on the timescale of a single femtosecond (1 femtosecond is a billionth of a millionth of a second).

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The University of Erlangen promotes action against climate change by application of modern infrastructure based on renewable energies and zero emission mobility. At the chair of Laser Physics a roof top photovoltaics system was installed six years ago, making that location ideal to install charging ...

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ACHIP collaboration meeting in Switzerland Hosted by Rasmus Ischebeck, PSI, the ACHIP collaboration gathered for a fruitful 2.5-day meeting near PSI in Switzerland. All members of our chair working on dielectric laser acceleration joined the meeting.