Detection of entanglement with few local measurements 论文

详细信息

发表期刊/会议

Physical Review A

发表日期

2002-12-09

发表年份

2002

摘要

We introduce a general method for the experimental detection of entanglement by performing only few local measurements, assuming some prior knowledge of the density matrix. The idea is based on the minimal decomposition of witness operators into a pseudomixture of local operators. We discuss an experimentally relevant case of two qubits, and show an example how bound entanglement can be detected with few local measurements.