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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).