A criterion for entanglement in two two-level systems
E. Ferraro, A. Napoli, A. Messina
TL;DR
This paper establishes a simple, experimentally relevant criterion for determining entanglement in two two-level systems and demonstrates its application through an analysis of a spin star system's entanglement dynamics.
Contribution
It provides a necessary and sufficient entanglement criterion for two two-level systems, enhancing experimental detection and analysis.
Findings
Derived a simple entanglement criterion for two two-level systems
Applied the criterion to analyze entanglement evolution in a spin star system
Demonstrated the criterion's effectiveness in an experimental context
Abstract
We prove a necessary and sufficient condition for the occurrence of entanglement in two two-level systems, simple enough to be of experimental interest. Our results are illustrated in the context of a spin star system analyzing the exact entanglement evolution of the central couple of spins.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Mechanics and Applications