Relations between the average bipartite entanglement and N-partite correlation functions

Authors：Huang, Haiqing; Ahmed, Irfan^*; Ali, Ahmed; Zha, Xin-wei; Chan, Raymond Hon-Fu; Zhang, Yanpeng^*

Source：LASER PHYSICS, 2022, 32(7): 075201.

DOI：10.1088/1555-6611/ac6e44

• average bipartite entanglement
• N-partite correlation functions
• maximally multi-qubit entangled state

We study the relations between the average bipartite entanglement and the N-partite length of correlation. We show that the N-partite length of correlation can completely determine the average bipartite entanglement for two and three-qubits. For four-, five- and six-qubit systems, the N-partite correlation functions may not determine the average bipartite entanglement. These results are novel and promising for pure state.

• Institution
  i; 西安交通大学