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Showing 2015 · quant-phShow all
3 papers · 2 filters
quant-ph2015★ 435 cited
Fisher Information and entanglement of non-Gaussian spin states
Helmut Strobel, Wolfgang Muessel, Daniel Linnemann +5
Entanglement is the key quantum resource for improving measurement sensitivity beyond classical limits. However, the production of entanglement in mesoscopic atomic systems has bee…
quant-ph2015★ 6 cited
Twist-and-Turn Spin Squeezing in Bose-Einstein Condensates
W. Muessel, H. Strobel, D. Linnemann +3
We experimentally demonstrate an alternative method for the dynamic generation of atomic spin squeezing, building on the interplay between linear coupling and nonlinear phase evolu…
quant-ph2015★ 53 cited
Coupled Oscillator Systems Having Partial PT Symmetry
Alireza Beygi, S. P. Klevansky, Carl M. Bender
This paper examines chains of coupled harmonic oscillators. In isolation, the th oscillator () has the natural frequency and is described by the Hamilto…