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19922026
Showing 2010 · quant-phShow all

5 papers · 2 filters

quant-ph2010★ 37 cited

Mach-Zehnder interferometry with interacting trapped Bose-Einstein condensates

Julian Grond, Ulrich Hohenester, Joerg Schmiedmayer +1

We theoretically analyze a Mach-Zehnder interferometer with trapped condensates, and find that it is surprisingly stable against the nonlinearity induced by inter-particle interact…

quant-ph2010★ 435 cited

On the origin of strong photon antibunching in weakly nonlinear photonic molecules

Motoaki Bamba, Atac Imamoglu, Iacopo Carusotto +1

In a recent work [T. C. H. Liew and V. Savona, Phys. Rev. Lett. {\bf104}, 183601 (2010)] it was numerically shown that in a photonic 'molecule' consisting of two coupled cavities,…

quant-ph2010★ 52 cited

Multiparticle covariance matrices and the impossibility of detecting graph state entanglement with two-particle correlations

Oleg Gittsovich, Philipp Hyllus, Otfried Gühne

We present a criterion for multiparticle entanglement based on covariance matrices. On the one hand, the criterion allows to detect bound entangled states which are not detected by…

quant-ph2010★ 594 cited

Fisher information and multiparticle entanglement

Philipp Hyllus, Wiesław Laskowski, Roland Krischek +5

The Fisher information gives a limit to the ultimate precision achievable in a phase estimation protocol. It has been shown recently that the Fisher information for a linear tw…

quant-ph2010★ 129 cited

Entanglement and sensitivity in precision measurements with states of a fluctuating number of particles

P. Hyllus, L. Pezzé, A. Smerzi

The concepts of separability, entanglement, spin-squeezing and Heisenberg limit are central in the theory of quantum enhanced metrology. In the current literature, these are well e…