publication . Article . Preprint . Other literature type . 2002

Detection of entanglement with few local measurements

Gühne, O.; Hyllus, P.; Bruß, D.; Ekert, A.; Lewenstein, M.; Chiara Macchiavello; Sanpera, A.;
  • Published: 09 Dec 2002
Abstract
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 pseudo-mixture 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.
Subjects
free text keywords: No-communication theorem, Quantum mechanics, Quantum discord, Quantum entanglement, Squashed entanglement, Amplitude damping channel, Physics, Quantum metrology, W state, Quantum nonlocality, Quantum Physics
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22 references, page 1 of 2
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publication . Article . Preprint . Other literature type . 2002

Detection of entanglement with few local measurements

Gühne, O.; Hyllus, P.; Bruß, D.; Ekert, A.; Lewenstein, M.; Chiara Macchiavello; Sanpera, A.;