Concurrence via entanglement witnesses

Abstract

We derive an experimentally observable lower bound on concurrence of mixed quantum states in terms of an entanglement witness, relating measurements on single states with those on two copies.

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Cited by in corpus (23)

• Entanglement detection
• Unifying several separability conditions using the covariance matrix criterion
• Further results on entanglement detection and quantification from the correlation matrix criterion
• Observable estimation of entanglement for arbitrary finite-dimensional mixed states
• Lower bounds on entanglement measures from incomplete information
• Entanglement detection via tighter local uncertainty relations
• Quantifying entanglement of a two-qubit system via measurable and invariant moments of its partially transposed density matrix
• Novel Schemes for Directly Measuring Entanglement of General States
• The Hong-Ou-Mandel effect with atoms
• Fast entanglement detection for unknown states of two spatial qutrits
• Universal nonlinear entanglement witnesses
• Hierarchies of multipartite entanglement for continuous-variable states
• Entanglement measures as physical observables
• Beyond the standard entropic inequalities: stronger scalar separability criteria and their applications
• Estimating Concurrence via Entanglement Witnesses
• Detection of mixed bipartite entangled state in arbitrary dimension via structural physical approximation of partial transposition
• Witness Operator Provides Better Estimate of the Lower Bound of Concurrence of Bipartite Bound Entangled States in $d_1\otimes d_2$ Dimensional System
• Robust control of long distance entanglement in disordered spin chains
• Theoretical proposal for the experimental realization of realignment operation
• Analytically Computable Symmetric Quantum Correlations
• Structured Negativity: A physically realizable measure of entanglement based on structural physical approximation
• Detecting Entanglement Generating Circuits in Cloud-Based Quantum Computing
• On the correction of anomalous phase oscillation in entanglement witnesses using quantum neural networks