Quantum correlations of two-qubit states with one maximally mixed marginal

Abstract

We investigate the entanglement, CHSH nonlocality, fully entangled fraction and symmetric extendibility of two-qubit states that have a single maximally mixed marginal. Within this set of states, the steering ellipsoid formalism has recently highlighted an interesting family of so-called 'maximally obese' states. These are found to have extremal quantum correlation properties that are significant in the steering ellipsoid picture and for the study of two-qubit states in general.

5 pages, 2 figures. Published version

References in corpus (4)

• Quantum steering ellipsoids, extremal physical states and monogamy
• Two-qubit mixed states more entangled than pure states: Comparison of the relative entropy of entanglement for a given nonlocality
• Teleportation of qubit states through dissipative channels: Conditions for surpassing the no-cloning limit
• Symmetric extension in two-way quantum key distribution

Cited by in corpus (10)

• Maximal Steered Coherence Protection by Quantum Reservoir Engineering
• Effect of Local Channels on Quantum Steering Ellipsoids
• Geometric representation of two-qubit entanglement witnesses
• Deep learning the hierarchy of steering measurement settings of qubit-pair states
• Experimental verification of the steering ellipsoid zoo via two-qubit states
• On the power of one pure steered state for EPR-steering with a pair of qubits
• Locally inaccessible hidden quantum correlations
• Swapping of quantum correlations and the role of local filtering operations
• Entanglement and volume monogamy features of permutation symmetric N-qubit pure states with N-distinct spinors: GHZ and WWbar states
• Protection of quantum steering ellipsoids in non-Markovian environments