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Cited by 255

The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

Maximally entangled mixed states of two qubits

Open access
Verstraete, Frank, Audenaert, Koenraad, De Moor, Bart·2001·Physical Review A

Abstract

We consider mixed states of two qubits and show under which global unitary operations their entanglement is maximized. This leads to a class of states that is a generalization of the Bell states. Three measures of entanglement are considered: entanglement of formation, negativity, and relative entropy of entanglement. Surprisingly all states that maximize one measure also maximize the others. We give a complete characterization of these generalized Bell states and prove that these states for fixed eigenvalues are all equivalent under local unitary transformations. Furthermore we characterize all nearly entangled states closest to the maximally mixed state and derive a lower bound on the volume of separable mixed states.

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Crossref · 10.1103/physreva.64.012316

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Metadata

Authors
Verstraete, F., Audenaert, K., & De Moor, B.
Venue
Physical Review A
Published
2001-06-15
Volume
64
Issue
1
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
OpenAlex
W2037468132
Cited by
255
References
14
FWCI
8.64
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Maximally entangled mixed states of two qubits. https://app.cochat.ai/papers/10.1103/physreva.64.012316
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Verstraete, F., Audenaert, K., & De Moor, B. (2001). Maximally entangled mixed states of two qubits. Physical Review A. https://doi.org/10.1103/physreva.64.012316

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