Minimal Zeeman field requirement for a topological transition in superconductors

Kavli Affiliate: Michael Wimmer | First 5 Authors: Kim Pöyhönen, Daniel Varjas, Michael Wimmer, Anton R. Akhmerov, | Summary: Platforms for creating Majorana quasiparticles rely on superconductivity and breaking of time-reversal symmetry. By studying continuous deformations to known trivial states, we find that the relationship between superconducting pairing and time reversal breaking imposes rigorous bounds […]


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NetSquid, a NETwork Simulator for QUantum Information using Discrete events

Kavli Affiliate: Stephanie Wehner | First 5 Authors: Tim Coopmans, Robert Knegjens, Axel Dahlberg, David Maier, Loek Nijsten | Summary: In order to bring quantum networks into the real world, we would like to determine the requirements of quantum network protocols including the underlying quantum hardware. Because detailed architecture proposals are generally too complex for […]


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Nanopores — a Versatile Tool to Study Protein Dynamics

Kavli Affiliate: Cees Dekker | First 5 Authors: Sonja Schmid, Cees Dekker, , , | Summary: Proteins are the active working horses in our body. These biomolecules perform all vital cellular functions from DNA replication and general biosynthesis to metabolic signaling and environmental sensing. While static 3D structures are now readily available, observing the functional […]


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Controlling the anisotropy of a van der Waals antiferromagnet with light

Kavli Affiliate: P. G. Steeneken | First 5 Authors: D. Afanasiev, J. R. Hortensius, M. Matthiesen, S. Mañas-Valero, M. Šiškins | Summary: Magnetic van der Waals materials provide an ideal playground for exploring the fundamentals of low-dimensional magnetism and open new opportunities for ultrathin spin processing devices. The Mermin-Wagner theorem dictates that as in reduced […]


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Palladium Zero-Mode Waveguides for Optical Single Molecule Detection with Nanopores

Kavli Affiliate: Cees Dekker | First 5 Authors: Nils Klughammer, Cees Dekker, , , | Summary: Holes in metal films block any transmitting light if the wavelength is much larger than the hole diameter, establishing such nanopores as so-called Zero Mode Waveguides (ZMWs). Molecules on the other hand, can still passage through these holes. We […]


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CMOS-based cryogenic control of silicon quantum circuits

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Xiao Xue, Bishnu Patra, Jeroen P. G. van Dijk, Nodar Samkharadze, Sushil Subramanian | Summary: The most promising quantum algorithms require quantum processors hosting millions of quantum bits when targeting practical applications. A major challenge towards large-scale quantum computation is the interconnect complexity. In current solid-state qubit […]


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Conductance asymmetries in mesoscopic superconducting devices due to finite bias

Kavli Affiliate: Michael Wimmer | First 5 Authors: André Melo, Chun-Xiao Liu, Piotr Rożek, Tómas Örn Rosdahl, Michael Wimmer | Summary: Tunneling conductance spectroscopy in normal metal-superconductor junctions is an important tool for probing Andreev bound states in mesoscopic superconducting devices, such as Majorana nanowires. In an ideal superconducting device, the subgap conductance obeys specific […]


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Points2Surf: Learning Implicit Surfaces from Point Cloud Patches

Kavli Affiliate: Michael Wimmer | First 5 Authors: Philipp Erler, Paul Guerrero, Stefan Ohrhallinger, Michael Wimmer, Niloy J. Mitra | Summary: A key step in any scanning-based asset creation workflow is to convert unordered point clouds to a surface. Classical methods (e.g., Poisson reconstruction) start to degrade in the presence of noisy and partial scans. […]


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Josephson current via an isolated Majorana zero mode

Kavli Affiliate: Michael Wimmer | First 5 Authors: Chun-Xiao Liu, Bernard van Heck, Michael Wimmer, , | Summary: We study the equilibrium dc Josephson current in a junction between an $s$-wave and a topological superconductor. Cooper pairs from the $s$-wave superconducting lead can transfer to the topological side either via an unpaired Majorana zero mode […]


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The germanium quantum information route

Kavli Affiliate: Menno Veldhorst | First 5 Authors: Giordano Scappucci, Christoph Kloeffel, Floris A. Zwanenburg, Daniel Loss, Maksym Myronov | Summary: In the worldwide endeavor for disruptive quantum technologies, germanium is emerging as a versatile material to realize devices capable of encoding, processing, or transmitting quantum information. These devices leverage special properties of the germanium […]


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