106 citations · 609 across the 27 of their papers we have counts for
8 papers · 1 filter
Simulating Microwave-Controlled Spin Imaging with Free-Space Electrons
Santiago Beltrán-Romero, Stefan Löffler, Dennis Rätzel +1
Coherent spin resonance techniques, such as nuclear and electron spin resonance spectroscopy, have revolutionized non-invasive imaging by providing spectrally resolved information…
Entanglement in Elastic Electron Scattering: Perturbation theory misses fundamental aspects of Bragg scattering
Stefan Löffler, Peter Schattschneider
Elastic electron scattering is one of the primary means of investigating materials on the atomic scale. It is usually described in a one-particle approach (the probe electron's evo…
A quantum logic gate for free electrons
Stefan Löffler, Thomas Schachinger, Peter Hartel +6
The topological charge of vortex electrons spans an infinite-dimensional Hilbert space. Selecting a two-dimensional subspace spanned by , a beam electron in a transmis…
The electron microscope as a quantum gate
Peter Schattschneider, Stefan Löffler
We propose to use the topological charge instead of the spin variable to span a two-dimensional Hilbert space for beam electrons in a transmission electron microscope (TEM). In thi…
Unitary Two-State Quantum Operators Realized By Quadrupole Fields in the Electron Microscope
Stefan Löffler
In this work, a novel method for using a set of electromagnetic quadrupole fields is presented to implement arbitrary unitary operators on a two-state quantum system of electrons.…
Entanglement and Entropy in Electron-Electron Scattering
Peter Schattschneider, Stefan Löffler, Herbert Gollisch +1
Treating Coulomb scattering of two free electrons in a stationary approach, we explore the momentum and spin entanglement created by the interaction. We show that a particular disc…
Is magnetic chiral dichroism feasible with electron vortices?
Peter Schattschneider, Stefan Löffler, Michael Stöger-Pollach +1
We discuss the feasibility of detecting magnetic transitions with focused electron vortex probes, suggested by selection rules for the magnetic quantum number. We theoretically est…
Comment on "Quantized Orbital Angular Momentum Transfer and Magnetic Dichroism in the Interaction of Electron Vortices with Matter"
Peter Schattschneider, Stefan Löffler, Johan Verbeeck
It was claimed (Lloyd et al., PRL 108 (2012) 074802) that energy loss magnetic chiral dichroism (EMCD) with electron vortex beams is feasible, and has even advantages over the stan…