Details
| Original language | English |
|---|---|
| Pages (from-to) | 110502 |
| Number of pages | 1 |
| Journal | Phys. Rev. Lett. |
| Volume | 98 |
| Issue number | 11 |
| Publication status | Published - 2007 |
Abstract
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In: Phys. Rev. Lett., Vol. 98, No. 11, 2007, p. 110502.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Estimating entanglement measures in experiments
AU - Gühne, O.
AU - Reimpell, M.
AU - Werner, R. F.
PY - 2007
Y1 - 2007
N2 - We present a method to estimate entanglement measures in experiments. We show how a lower bound on a generic entanglement measure can be derived from the measured expectation values of any finite collection of entanglement witnesses. Hence witness measurements are given a quantitative meaning without the need of further experimental data. We apply our results to a recent multiphoton experiment [M. Bourennane , Phys. Rev. Lett. 92, 087902 (2004)], giving bounds on the entanglement of formation and the geometric measure of entanglement in this experiment.
AB - We present a method to estimate entanglement measures in experiments. We show how a lower bound on a generic entanglement measure can be derived from the measured expectation values of any finite collection of entanglement witnesses. Hence witness measurements are given a quantitative meaning without the need of further experimental data. We apply our results to a recent multiphoton experiment [M. Bourennane , Phys. Rev. Lett. 92, 087902 (2004)], giving bounds on the entanglement of formation and the geometric measure of entanglement in this experiment.
U2 - 10.1103/PhysRevLett.98.110502
DO - 10.1103/PhysRevLett.98.110502
M3 - Article
VL - 98
SP - 110502
JO - Phys. Rev. Lett.
JF - Phys. Rev. Lett.
IS - 11
ER -