Another kind of quantum correlations is quantum discord 25, 26, 27, 28, 29, which may even exist in a separable state with vanished entanglement. One of the potential quantum correlations is quantum entanglement 20, 21, 22, 23, 24, which has been widely concerned. The role of coherence in thermodynamics has also been discussed 18, 19.īesides, quantum coherence in multipartite systems involves the essence of quantum correlations.

Meanwhile, various properties of quantum coherence have been investigated such as the connections between quantum coherence and quantum correlations in multipartite systems 8, 9, 10, 11, 12, 13, the distillation of coherence 5, 14, 15, the dynamics under noisy evolution of quantum coherence 16, 17, among others. Recently, many efforts have been devoted to develop the resource theory of quantum coherence 2, 3, 4, 5, 6, 7. Quantum coherence arising from quantum superposition 1, represents a fundamental feature that marks the departure of quantum mechanics from classical physics.

The sun vanished discord