663 citations · 3.7k across the 38 of their papers we have counts for
4 papers · 1 filter
Negativity and Concurrence of mixed 2X2 states
Koenraad Audenaert, Frank Verstraete, Tijl De Bie +1
We consider two measures of entanglement of mixed bipartite states of dimension 2X2: concurrence and negativity. We first prove the conjecture of Eisert and Plenio that concurrence…
Local filtering operations on two qubits
Frank Verstraete, Jeroen Dehaene, Bart De Moor
We consider one single copy of a mixed state of two qubits and investigate how its entanglement changes under local quantum operations and classical communications (LQCC) of the ty…
Maximally entangled mixed states of two qubits
Frank Verstraete, Koenraad Audenaert, Tijl De Bie +1
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 t…
Variational Characterisations of Separability and Entanglement of Formation
K. Audenaert, F. Verstraete, B. De Moor
In this paper we develop a mathematical framework for the characterisation of separability and entanglement of formation (EoF) of general bipartite states. These characterisations…