236 citations · 236 across the 2 of their papers we have counts for
10 papers · 1 filter
Multi-resonant spinor dynamics in a Bose-Einstein condensate
C. Klempt, O. Topic, G. Gebreyesus +6
We analyze the spinor dynamics of a Rb-87 F=2 condensate initially prepared in the m_F=0 Zeeman sublevel. We show that this dynamics, characterized by the creation of correlated at…
Unifying several separability conditions using the covariance matrix criterion
Oleg Gittsovich, Otfried Gühne, Philipp Hyllus +1
We present a framework for deciding whether a quantum state is separable or entangled using covariance matrices of locally measurable observables. This leads to the covariance matr…
Covariance matrices and the separability problem
O. Gühne, P. Hyllus, O. Gittsovich +1
We propose a unifying approach to the separability problem using covariance matrices of locally measurable observables. From a practical point of view, our approach leads to strong…
Optimal entanglement witnesses for continuous-variable systems
P. Hyllus, J. Eisert
This paper is concerned with all tests for continuous-variable entanglement that arise from linear combinations of second moments or variances of canonical coordinates, as they are…
Differential atom interferometry beyond the standard quantum limit
K. Eckert, P. Hyllus, D. Bruss +6
We analyze methods to go beyond the standard quantum limit for a class of atomic interferometers, where the quantity of interest is the difference of phase shifts obtained by two i…
Relations between Entanglement Witnesses and Bell Inequalities
P. Hyllus, O. Guehne, D. Bruss +1
Bell inequalities, considered within quantum mechanics, can be regarded as non-optimal witness operators. We discuss the relationship between such Bell witnesses and general entang…