Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Theoretical study of decoherence mechanisms and entanglement dynamics with specific application to materials like superconductors, magnets, etc., and quantum computation

Philip C. E. Stamp, Jeroen Wiemer

Published Nov 1, 2000• 0 citations
OpenAlex

Related papers

Exploring dynamics of individual vortices in a superconductor via a levitated magnetic transducer

Yiqi Wang, Trisha Madhavan, J. DaLi Schaefer +3 more

Trapped vortices determine fundamental properties of superconductors and play an important role in many practical applications such as magnetic levitation, however their complex dynamics remain poorly understood. Here, we use the mechanical motion of micron-scale levitated magnetic particles to probe the dynamics of individual vortices. Specifically, we show that the dynamics of levitated magnets are strongly influenced by vortices trapped in the YBCO superconducting film. We observe random telegraph signals in the mechanical frequency, dissipation rate, and energy of levitated particles, which we attribute to random tunneling of individual vortices. The nonlinearity of vortex-defect interaction manifests as non-exponential decay in ringdown measurements, revealing a complex underlying potential landscape. Our results provide insights into elusive dissipation mechanisms in superconducting levitated systems, open new avenues for using levitated magnets as sensitive probes of static and dynamic properties of individual vortices in superconductors and their interactions with material disorder, and point toward novel routes for using magnetic particles as highly coherent mechanical transducers.

quant-pharXiv:2606.27297•Jun 26, 2026

Introduction to entanglement and applications to the simulation of many-body quantum systems

Mafalda L. Almeida, Yasser Omar, Vitor Rocha Vieira

WORLD SCIENTIFIC eBooks•Jul 1, 2007•1 citation

Decoherence and entanglement in quantum systems

Journal of Russian Laser Research•Sep 1, 2007•0 citations

Quantum Dynamics and Coherence of Qubits

Vladimir Privman A

Abstract — We review results in theoretical modeling of quantum systems in support of the studies of decoherence and qubit interactions for quantum information processing. The developed modeling tools have been applied to semiconductor materials and nanostructures that show promise for implementation of coherent, controlled quantum dynamics at the level of registers of several quantum bits (qubits), such as spins. Field-theoretical techniques have been utilized to address decoherence and more generally the origin and effects of quantum noise and the loss of entanglement in quantum dynamics of qubits and several-qubit registers. Qubit coupling mechanisms via the indirect exchange interaction have been investigated, and quantum computing designs have been evaluated for scalability. We also describe general and specific research challenges, the solution of which will advance the field of modeling “open quantum systems ” to further our understanding of how environmental influences affect quantum coherence and its loss during quantum dynamics.

•Aug 21, 2011•0 citations

Entanglement and Decoherence of Coupled Superconductor Qubits in Contact with a Common Environment

Y. H. Ji, Yan Jun Hu, Yawei Yu

International Journal of Theoretical Physics•May 18, 2011•2 citations

Title: Geometric Simulation of Complex Material Behavior with Quantum Entanglement

Jincheng Zhang

This research investigates the application of quantum entanglement to enhance geometric simulation of complex material behavior. The core claim is to develop a novel method for modeling material properties like superconductivity and magnetism by leveraging entanglement to represent intricate correlations between atoms and electrons, leading to a more detailed and accurate representation of material structure. The paper explores how entanglement can provide a mechanism for capturing subtle quantum effects that are often missed by traditional computational methods. We propose a framework that utilizes entangled states to model the dynamic evolution of material properties, offering a pathway towards significantly improved simulation fidelity and a deeper understanding of complex material phenomena. This work presents a theoretical foundation and initial implementation demonstrating the potential of this approach to revolutionize geometric material modeling.

•Sep 1, 2026•0 citations
Trapped vortices determine fundamental properties of superconductors and play an important role in many practical applications such as magnetic levitation, however their complex dynamics remain poorly understood. Here, we use the mechanical motion of micron-scale levitated magnetic particles to probe the dynamics of individual vortices. Specifically, we show that the dynamics of levitated magnets are strongly influenced by vortices trapped in the YBCO superconducting film. We observe random telegraph signals in the mechanical frequency, dissipation rate, and energy of levitated particles, which we attribute to random tunneling of individual vortices. The nonlinearity of vortex-defect interaction manifests as non-exponential decay in ringdown measurements, revealing a complex underlying potential landscape. Our results provide insights into elusive dissipation mechanisms in superconducting levitated systems, open new avenues for using levitated magnets as sensitive probes of static and dynamic properties of individual vortices in superconductors and their interactions with material disorder, and point toward novel routes for using magnetic particles as highly coherent mechanical transducers.
Abstract — We review results in theoretical modeling of quantum systems in support of the studies of decoherence and qubit interactions for quantum information processing. The developed modeling tools have been applied to semiconductor materials and nanostructures that show promise for implementation of coherent, controlled quantum dynamics at the level of registers of several quantum bits (qubits), such as spins. Field-theoretical techniques have been utilized to address decoherence and more generally the origin and effects of quantum noise and the loss of entanglement in quantum dynamics of qubits and several-qubit registers. Qubit coupling mechanisms via the indirect exchange interaction have been investigated, and quantum computing designs have been evaluated for scalability. We also describe general and specific research challenges, the solution of which will advance the field of modeling “open quantum systems ” to further our understanding of how environmental influences affect quantum coherence and its loss during quantum dynamics.
This research investigates the application of quantum entanglement to enhance geometric simulation of complex material behavior. The core claim is to develop a novel method for modeling material properties like superconductivity and magnetism by leveraging entanglement to represent intricate correlations between atoms and electrons, leading to a more detailed and accurate representation of material structure. The paper explores how entanglement can provide a mechanism for capturing subtle quantum effects that are often missed by traditional computational methods. We propose a framework that utilizes entangled states to model the dynamic evolution of material properties, offering a pathway towards significantly improved simulation fidelity and a deeper understanding of complex material phenomena. This work presents a theoretical foundation and initial implementation demonstrating the potential of this approach to revolutionize geometric material modeling.