15 citations · 34 across the 7 of their papers we have counts for
7 papers
Observation of Critical Current Minimum in Super-Honeycomb Josephson Junction Arrays
Melissa Mikalsen, Alexander-Georg Penner, Samuel D. Escribano +5
Superconductor-semiconductor Josephson junction arrays are a uniquely tunable platform for studying collective quantum phenomena, particularly in the regime where localized Andreev…
Heat-to-motion conversion for quantum active matter
Alexander-Georg Penner, Ludmila Viotti, Rosario Fazio +2
We introduce a model of an active quantum particle and discuss its properties. The particle has a set of internal states that mediate exchanges of heat with external reservoirs. He…
Subharmonic spin correlations and spectral pairing in Floquet time crystals
Alexander-Georg Penner, Harald Schmid, Leonid I. Glazman +1
Floquet time crystals are characterized by subharmonic behavior of temporal correlation functions. Studying the paradigmatic time crystal based on the disordered Floquet quantum Is…
Spontaneous supercurrents and vortex depinning in two-dimensional arrays of -junctions
Simon Reinhardt, Alexander-Georg Penner, Johanna Berger +9
Two-dimensional arrays of ballistic Josephson junctions are important as model systems for synthetic quantum materials. Here, we investigate arrays of multiterminal junctions which…
Robust spectral pairing in the random-field Floquet quantum Ising model
Harald Schmid, Alexander-Georg Penner, Kang Yang +2
Motivated by an experiment on a superconducting quantum processor [Mi et al., Science 378, 785 (2022)], we study level pairings in the many-body spectrum of the random-field Floque…
Resistivity tensor of vortex-lattice states in Josephson junction arrays
Alexander-Georg Penner, Karsten Flensberg, Leonid I. Glazman +1
Two-dimensional Josephson junction arrays frustrated by a perpendicular magnetic field are predicted to form a cascade of distinct vortex lattice states. Here, we show that the res…
Hilbert-space geometry of random-matrix eigenstates
Alexander-Georg Penner, Felix von Oppen, Gergely Zarand +1
The geometry of multi-parameter families of quantum states is important in numerous contexts, including adiabatic or nonadiabatic quantum dynamics, quantum quenches, and the charac…