Der eindrucksvolle Fortschritt in der gezielten Fertigung von Mikro- und Nanostrukturen und deren Kontrolle im Quantenregime hat es erlaubt, Qubits in festkörperbasierten Plattformen herzustellen,…
One of the cornerstones of quantum communication is the unconditionally secure distribution of classical keys between remote parties. This key feature of quantum technology is based on the quantum…
Understanding the non-deterministic behavior of deterministic nonlinear systems has been an implicit dream since Lorenz named it the "butterfly effect". A prominent example is the hysteresis and…
Just like its predecessor OpenSuperQ, the OpenSuperQPlus project is part of the European Quantum Technology Flagship. It is continuing and enhancing OpenSuperQ and brings together most of its team…
The physics of the Mott metal-insulator transition (MIT) has attracted huge interest in the last decades. However, despite broad efforts, some key theoretical predictions are still lacking…
The precession of magnon pseudospin about the equilibrium pseudofield, the latter capturing the nature of magnonic eigen-excitations in an antiferromagnet, gives rise to the magnon Hanle effect. Its…
We investigate the coupled magnetization dynamics in heterostructures of a single crystal of the chiral magnet Cu2OSeO3 (CSO) and a polycrystalline ferromagnet NiFe (Py) thin film using broadband…
Applications for noisy intermediate-scale quantum computing devices rely on the efficient entanglement of many qubits to reach a potential quantum advantage. Although entanglement is typically…
We report the levitation of a superconducting lead-tin sphere with 100 μm diameter (corresponding to a mass of 5.6 μg) in a static magnetic trap formed by two coils in an anti-Helmholtz…
In the joint Lighthouse Projects NeQuS and IQSense scientists from different MQV institutions will work on basic aspects of quantum systems.
Peter Rabl has been appointed full professor for Applied Quantum Theory at TUM and Scientific Director at WMI
High-temperature superconducting cuprates respond to doping with a dome-like dependence of their critical temperature (Tc). But the family-specific maximum Tc can be surpassed by application of…
Tip-enhanced Raman spectroscopy (TERS) combines inelastic light scattering well below the diffraction limit down to the nanometer range and scanning probe microscopy and, possibly, spectroscopy. In…
Ohne Signalgeneratoren mit hoher Phasen- und Amplitudenstabilität wäre die heutige Forschung an Quantencomputern nicht möglich. Einige Gerätehersteller arbeiten eng mit der Wissenschaft zusammen, um…
Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films…
We report on the magnetic behavior of oxidized-CoxFe1−xS2 nanocrystals as they assemble to form nanoparticles. The morphologies show a typical NP size of around 250–100 nm and NC sizes of around 7…
Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit can be overcome by…
Mittlerweile können Forschende Quantensysteme gezielt erzeugen und ihren Zustand präzise kontrollieren und auslesen. Das nährt nicht nur die Hoffnung auf eine neue Generation von Computern, sondern…
Die Radartechnologie wird seit Jahrzehnten immer weiter vorangetrieben und perfektioniert. Aktuelle Forschungen zielen nun darauf ab, sogar deren fundamentale Leistungsgrenzen zu verschieben.…
For experiments in the sub-Kelvin temperature regime with high demands for an extremely low level of vibration, a pulse tube precooled dilution refrigerator (DR) is described where the (vibration…
| Ze-Liang Xiang and Diego González Olivares and Juan José García-Ripoll and Peter Rabl
In easy-plane antiferromagnets, the nature of the elementary excitations of the spin system is captured by the precession of the magnon pseudospin around its equilibrium pseudofield, manifesting…
Quantum entanglement is a key resource in currently developed quantum technologies. Sharing this fragile property between superconducting microwave circuits and optical or atomic systems would enable…
We study light-matter interactions in the bulk of a two-dimensional photonic lattice system, where photons are subject to the combined effect of a synthetic magnetic field and an orthogonal synthetic…
It is only when solving problems that we ask ourselves questions that we think we have already answered and understood. By providing full solutions, this exercise book with over 100 tasks and…
We address the fundamental question of whether or not it is possible to achieve conditions under which the coupling of a single dipole to a strongly confined electromagnetic vacuum can result in…
We investigate the growth conditions for thin (${\leqslant}200$ nm) sputtered aluminum films. These coatings are needed for various applications, e.g. for advanced manufacturing processes in the…
Achieving homogeneous performance metrics between nominally identicalpixels is challenging for the operation of arrays of superconducting nanowiresingle-photon detectors (SNSPDs). Here, local helium…
Geometric and holonomic quantum computation utilizes intrinsic geometric properties of quantum-mechanical state spaces to realize quantum logic gates. Since both geometric phases and quantum…
| Munich Center for Quantum Science and Technology (MCQST)
In diesem Buch teilen führende Vertreter aus Industrie und Forschung ihre Erfahrungen und Empfehlungen zur wirtschaftlichen Nutzbarmachung der Quantentechnologien. Verständlich geschrieben erklären…
Ohne hochgradig phasen- und amplitudenstabile Signalgeneratoren wäre die
heutige Forschung an Quantencomputern nicht möglich. Einige Gerätehersteller
arbeiten eng mit der…
A magnonic spin current crossing a ferromagnet-metal interface is accompanied by spin current shot noise arising from the discrete quanta of spin carried by magnons. In thin films, for example, the…
We propose and analyze a scalable and fully autonomous scheme for preparing spatially distributed multiqubit entangled states in a dual-rail waveguide QED setup. In this approach, arrays of qubits…
Antiferromagnetic materials have been proposed as new types of narrowband THz spintronic devices owing to their ultrafast spin dynamics. Manipulating coherently their spin dynamics, however, remains…
We present small-angle neutron scattering studies of the magnetic vortex lattice (VL) in Ca0.04Y0.96Ba2Cu3O7 up to a field of 16.7 T and Ca0.15Y0.85Ba2Cu3O7 up to 25 T to investigate the general…
New-generation direct searches for low mass dark matter feature detection thresholds at energies well below 100 eV, much lower than the energies of commonly used x-ray calibration sources. This…
We present limits on the spin-independent interaction cross section of dark matter particles with silicon nuclei, derived from data taken with a cryogenic calorimeter with 0.35 g target mass operated…
