"68" . "Entangled graphs: Classical correlations in multi-qubit entangled systems"@en . . . "1094-1622" . "Plesch, Martin" . "Entangled graphs: Classical correlations in multi-qubit entangled systems" . . "Entangled graphs: Classical correlations in multi-qubit entangled systems"@en . "605989" . "6"^^ . "RIV/00216224:14330/03:00008726" . "Bipartite correlations in multiqubit systems cannot be shared freely. The presence of entanglement or classical correlation on certain pairs of qubits may imply correlations on other pairs. We present a method of characterization of bipartite correlations in multiqubit systems using a concept of entangled graphs which has been introduced in our earlier work @M. Plesch and V. Bu\u017Eek, Phys. Rev. A 67, 012322 ~2003!#. In entangled graphs, each qubit is represented by a vertex while the entanglement and classical correlations are represented by two types of edges. We prove by construction that any entangled graph with classical correlations can be represented by a mixed state of N qubits. However, not all entangled graphs with classical correlations can be represented by a pure state."@en . "Entangled graphs: Classical correlations in multi-qubit entangled systems" . "[291538C4D20A]" . "01" . . . . "Bipartite correlations in multiqubit systems cannot be shared freely. The presence of entanglement or classical correlation on certain pairs of qubits may imply correlations on other pairs. We present a method of characterization of bipartite correlations in multiqubit systems using a concept of entangled graphs which has been introduced in our earlier work @M. Plesch and V. Bu\u017Eek, Phys. Rev. A 67, 012322 ~2003!#. In entangled graphs, each qubit is represented by a vertex while the entanglement and classical correlations are represented by two types of edges. We prove by construction that any entangled graph with classical correlations can be represented by a mixed state of N qubits. However, not all entangled graphs with classical correlations can be represented by a pure state." . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . . "Bu\u017Eek, Vladim\u00EDr" . . "Physical Review A (Atomic, Molecular, and Optical Physics)" . . "14330" . . "Entanglement theory"@en . "0"^^ . "RIV/00216224:14330/03:00008726!RIV/2004/GA0/143304/N" . . . "0"^^ . "2"^^ . . "P(GA201/01/0413), Z(MSM 143300001)" . . "2"^^ . "2313-2318" .