Adesso, G;
Serafini, A;
Illuminati, F;
(2004)
Quantification and scaling of multipartite entanglement in continuous variable systems.
PHYS REV LETT
, 93
(22)
, Article 220504. 10.1103/PhysRevLett.93.220504.
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Abstract
We present a theoretical method to determine the multipartite entanglement between different partitions of multimode, fully or partially symmetric Gaussian states of continuous variable systems. For such states, we determine the exact expression of the logarithmic negativity and show that it coincides with that of equivalent two-mode Gaussian states. Exploiting this reduction, we demonstrate the scaling of the multipartite entanglement with the number of modes and its reliable experimental estimate by direct measurements of the global and local purities.
| Type: | Article |
|---|---|
| Title: | Quantification and scaling of multipartite entanglement in continuous variable systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.93.220504 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.93.220504 |
| Language: | English |
| Additional information: | The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/291750 |
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