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Article
Open AccessThe speed limit of optoelectronics
Light-field driven charge motion links semiconductor technology to electric fields with attosecond temporal control. Motivated by ultimate-speed electron-based signal processing, strong-field excitation has be...
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Article
Absolute timing of the photoelectric effect
Photoemission spectroscopy is central to understanding the inner workings of condensed matter, from simple metals and semiconductors to complex materials such as Mott insulators and superconductors1. Most state-o...
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Article
Open AccessSize quantization of Dirac fermions in graphene constrictions
Quantum point contacts are cornerstones of mesoscopic physics and central building blocks for quantum electronics. Although the Fermi wavelength in high-quality bulk graphene can be tuned up to hundreds of nan...
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Article
Open AccessThe single-channel regime of transport through random media
The propagation of light through samples with random inhomogeneities can be described by way of transmission eigenchannels, which connect incoming and outgoing external propagating modes. Although the detailed...
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Article
Chladni figures in Andreev billiards
We study wave functions and their nodal patterns in Andreev billiards consisting of a normal-conducting (N) ballistic quantum dot in contact with a superconductor (S). The bound states in such systems feature ...
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Chapter and Conference Paper
A Modular Method for the Efficient Calculation of Ballistic Transport Through Quantum Billiards
We present a numerical method which allows to efficiently calculate quantum transport through phase-coherent scattering structures, so-called “quantum billiards”. Our approach consists of an extension of the c...
