206 citations · 501 across the 16 of their papers we have counts for
16 papers
Magnon Superlattices around Skyrmions in Frustrated Magnets
Adarsh Hullahalli, Christos Panagopoulos, Christina Psaroudaki
Dynamic and stable magnetic textures offer a powerful platform for controlling magnon states in the broader context of spin electronics. In this work, we uncover a novel class of d…
Optical signatures of quantum skyrmions
Sanchar Sharma, Christina Psaroudaki
Magnets have recently emerged as promising candidates for quantum computing, particularly using topologically-protected nanoscale spin textures. While the quantum dynamics of such…
Harnessing spin-qubit decoherence to probe strongly-interacting quantum systems
Marcin Płodzień, Sambunath Das, Maciej Lewenstein +2
Extracting information from quantum many-body systems remains a key challenge in quantum technologies due to experimental limitations. In this work, we employ a single spin qubit t…
Skyrmion Qubits: Challenges For Future Quantum Computing Applications
Christina Psaroudaki, Elias Peraticos, Christos Panagopoulos
Magnetic nano-skyrmions develop quantized helicity excitations, and the quantum tunneling between nano-skyrmions possessing distinct helicities is indicative of the quantum nature…
Energy Transfer in Random-Matrix ensembles of Floquet Hamiltonians
Christina Psaroudaki, Gil Refael
We explore the statistical properties of energy transfer in ensembles of doubly-driven Random- Matrix Floquet Hamiltonians, based on universal symmetry arguments. The energy pumpin…
Skyrmion Helicity: Quantization and Quantum Tunneling Effects
Christina Psaroudaki, Christos Panagopoulos
We derive the quantization of magnetic helicity in the solid-state and demonstrate tunable macroscopic quantum tunneling, coherence, and oscillation for a skyrmion spin texture sta…
Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
Christina Psaroudaki, Christos Panagopoulos
We introduce a new class of primitive building blocks for realizing quantum logic elements based on nanoscale magnetization textures called skyrmions. In a skyrmion qubit, informat…
Photon pumping in a weakly-driven quantum cavity-spin system
Christina Psaroudaki, Gil Refael
We investigate the photon pumping effect in a topological model consisting of a periodically driven spin-1/2 coupled to a quantum cavity mode out of the adiabatic limit. In the str…
Curvature-Induced Skyrmion Mass
Alexander Pavlis, Christina Psaroudaki
We investigate the propagation of magnetic skyrmions on elastically deformable geometries by employing imaginary time quantum field theory methods. We demonstrate that the Euclidea…
Spin Wave Radiation by a Topological Charge Dipole
Sebastian A. Diaz, Tomoki Hirosawa, Daniel Loss +1
The use of spin waves (SWs) as data carriers in spintronic and magnonic logic devices offers operation at low power consumption, free of Joule heating. Nevertheless, the controlled…
Enhancement of magnetization plateaus in low dimensional spin systems
Alexandros Metavitsiadis, Christina Psaroudaki, Wolfram Brenig
We study the low-energy properties and, in particular, the magnetization process of a spin-1/2 Heisenberg sawtooth and frustrated chain (also known as zig-zag ladder) wit…
Quantum Depinning of a Magnetic Skyrmion
Christina Psaroudaki, Daniel Loss
We investigate the quantum depinning of a weakly driven skyrmion out of an impurity potential in a mesoscopic magnetic insulator. For small barrier height, the Magnus force dynamic…
Quantum Brownian Motion of a Magnetic Skyrmion
Christina Psaroudaki, Pavel Aseev, Daniel Loss
Within a microscopic theory, we study the quantum Brownian motion of a skyrmion in a magnetic insulator coupled to a bath of magnon-like quantum excitations. The intrinsic skyrmion…
Spin liquid fingerprints in the thermal transport of a Kitaev-Heisenberg ladder
Alexandros Metavitsiadis, Christina Psaroudaki, Wolfram Brenig
We identify fingerprints of a proximate quantum spin-liquid (QSL), observable by finite-temperature dynamical thermal transport within a minimal version of the idealized Kitaev mod…
Skyrmions Driven by Intrinsic Magnons
Christina Psaroudaki, Daniel Loss
We study the dynamics of a skyrmion in a magnetic insulating nanowire in the presence of time-dependent oscillating magnetic field gradients. These ac fields act as a net driving f…
Quantum Dynamics of Skyrmions in Chiral Magnets
Christina Psaroudaki, Silas Hoffman, Jelena Klinovaja +1
We study the quantum propagation of a Skyrmion in chiral magnetic insulators by generalizing the micromagnetic equations of motion to a finite-temperature path integral formalism,…