Experimental generation of pseudo-bound-entanglement
Hermann Kampermann, Dagmar Bruß, Xinhua Peng +1 more
We use nuclear magnetic resonance to experimentally generate a bound-entangled (more precisely: pseudo-bound-entangled) state, i.e., a quantum state which is nondistillable but nevertheless entangled. Our quantum system consists of three qubits. We characterize the produced state via state tomography to show that the created state has a positive partial transposition with respect to any bipartite splitting, and we use a witness operator to prove its pseudoentanglement.
arXiv:0909.2743•Physical Review A•Apr 30, 2010•31 citations