@article{MairhoferPasson, author = {Mairhofer, Lukas and Passon, Oliver}, title = {Reconsidering the Relation Between "Matter Wave Interference" and "Wave-Particle Duality"}, series = {Foundations of Physics}, journal = {Foundations of Physics}, number = {52/32}, publisher = {Springer}, abstract = {Interference of more and more massive objects provides a spectacular confirmation of quantum theory. It is usually regarded as support for "wave-particle duality" and in an extension of this duality even as support for "complementarity". We first give an outline of the historical development of these notions. Already here it becomes evident that they are hard to define rigorously, i.e. have mainly a heuristic function. Then we discuss recent interference experiments of large and complex molecules which seem to support this heuristic function of "duality". However, we show that in these experiments the diffraction of a delocalized center-of-mass wave function depends on the interaction of the localized structure of the molecule with the diffraction element. Thus, the molecules display "dual features" at the same time, which contradicts the usual understanding of wave-particle duality. We conclude that the notion of "wave-particle duality" deserves no place in modern quantum physics.}, subject = {Quantenmechanik}, language = {en} } @misc{Mairhofer, author = {Mairhofer, Lukas}, title = {From foundational research to application - Training Quantum Engineers}, subject = {Didaktik}, language = {en} } @misc{Mairhofer, author = {Mairhofer, Lukas}, title = {Dying Experiments}, subject = {Experimentalsysteme}, language = {en} } @article{KialkaSticklerHornbergeretal., author = {Kialka, Filip and Stickler, Benjamin and Hornberger, Klaus and Fein, Yaakov and Geyer, Philipp and Mairhofer, Lukas and Gerlich, Stefan and Arndt, Markus}, title = {Concepts for long-baseline, high-mass matter-wave interferometry}, series = {Physica Scripta}, journal = {Physica Scripta}, number = {94, 2019}, abstract = {Designing experiments which delocalize ever more complex and more massive particles requires a quantitative assessment of new interferometer configurations. Here, we introduce a figure of merit which quantifies the difference between a genuine quantum interference pattern and a classical shadow and use it to compare a number of near-field interferometer schemes. This allows us to identify the most promising setups for future tests of the quantum superposition principle, and to discuss the perspectives of interferometry with complex molecules and clusters.}, subject = {Matter wave optics}, language = {en} } @article{SchaettiKoehlerMayoretal., author = {Sch{\"a}tti, Jonas and K{\"o}hler, Valentin and Mayor, Marcel and Fein, Yaakov and Geyer, Philipp and Mairhofer, Lukas and Gerlich, Stefan and Arndt, Markus}, title = {Matter-wave interference and deflection of tripeptides decorated with fluorinated alkyl chains}, series = {Journal of Mass Spectrometry}, journal = {Journal of Mass Spectrometry}, number = {Vol 55, issue 6}, subject = {interference}, language = {en} } @article{FeinShayeghiMairhoferetal., author = {Fein, Yaakov and Shayeghi, Armin and Mairhofer, Lukas and Kialka, Filip and Rieser, Philipp and Geyer, Philipp and Gerlich, Stefan and Arndt, Markus}, title = {Quantum-Assisted Measurement of Atomic Diamagnetism}, series = {Physical Review}, journal = {Physical Review}, number = {Volume 10, Issue 1}, subject = {diamagnetism}, language = {en} } @article{MairhoferEibenbergerShayeghietal., author = {Mairhofer, Lukas and Eibenberger, Sandra and Shayeghi, Armin and Arndt, Markus}, title = {A quantum ruler for magnetic deflectometry}, series = {Entropy}, volume = {20}, journal = {Entropy}, number = {7}, address = {Basel}, subject = {Magnetic deflectometry}, language = {en} } @inproceedings{MairhoferDippel, author = {Mairhofer, Lukas and Dippel, Anne}, title = {Traces and Patterns. Pictures of Interferences and Collisions in the Physics Lab}, series = {Traces. Generating What Was There}, booktitle = {Traces. Generating What Was There}, subject = {interferences}, language = {en} } @inproceedings{Mairhofer, author = {Mairhofer, Lukas}, title = {Observing the Unobservable: Quantum Interference of Complex Macromolecules}, series = {Interferences - Events}, booktitle = {Interferences - Events}, subject = {quantum}, language = {en} } @article{MairhoferEibenbergerCotteretal., author = {Mairhofer, Lukas and Eibenberger, Sandra and Cotter, Joe and Romirer, Marion and Shayeghi, Armin and Arndt, Markus}, title = {Quantum-assisted metrology of neutral vitamins in the gas-phase}, series = {Angewandte Chemie International Edition}, journal = {Angewandte Chemie International Edition}, abstract = {It has recently been shown that matter-wave interferometry can be used to imprint a periodic nanostructure onto a molecular beam, which provides a highly sensitive tool for beam displacement measurements. Herein, we used this feature to measure electronic properties of provitamin A, vitamin E, and vitamin K1 in the gas phase for the first time. The shift of the matter-wave fringes in a static electric field encodes the molecular susceptibility and the time-averaged dynamic electric dipole moment. The dependence of the fringe pattern on the intensity of the central light-wave diffraction grating was used to determine the molecular optical polarizability. Comparison of our experimental findings with molecular dynamics simulations and density functional theory provides a rich picture of the electronic structures and dynamics of these biomolecules in the gas phase with β-carotene as a particularly interesting example.}, subject = {Deflectometry}, language = {en} }