The separability versus entanglement problem
Sreetama Das, Titas Chanda, Maciej Lewenstein, Anna Sanpera, Aditi Sen, De, Ujjwal Sen
TL;DR
This paper reviews the challenge of distinguishing entangled from separable quantum states, discussing criteria, measures, classification, and multipartite entanglement in quantum information science.
Contribution
It provides a comprehensive overview of entanglement detection methods, classification schemes, and measures, highlighting their roles in quantum information processing.
Findings
Summarizes criteria for identifying entangled states
Classifies entangled states based on their usefulness in dense coding
Discusses aspects of multipartite entanglement
Abstract
We present a review of the problem of finding out whether a quantum state of two or more parties is entangled or separable. After a formal definition of entangled states, we present a few criteria for identifying entangled states and introduce some entanglement measures. We also provide a classification of entangled states with respect to their usefulness in quantum dense coding, and present some aspects of multipartite entanglement.
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Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Information and Cryptography · Quantum Mechanics and Applications