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Nonlinear Matter Wave Dynamics with a Chaotic Potential
S. A. Gardiner, D. Jaksch, R. Dum +2
We consider the case of a cubic nonlinear Schrödinger equation with an additional chaotic potential, in the sense that such a potential produces chaotic dynamics in classical mecha…
Separability in 2xN composite quantum systems
B. Kraus, J. I. Cirac, S. Karnas +1
We analyze the separability properties of density operators supported on $\C^2\otimes \C^N$ whose partial transposes are positive operators. We show that if the rank of equals…
Classification of multi-qubit mixed states: separability and distillability properties
W. Dür, J. I. Cirac
We give a complete, hierarchic classification for arbitrary multi-qubit mixed states based on the separability properties of certain partitions. We introduce a family of N-qubit st…
Distillability and partial transposition in bipartite systems
W. Dür, J. I. Cirac, M. Lewenstein +1
We study the distillability of a certain class of bipartite density operators which can be obtained via depolarization starting from an arbitrary one. Our results suggest that non-…
Inseparability criterion for continuous variable systems
Lu-Ming Duan, G. Giedke, J. I. Cirac +1
An inseparability criterion based on the total variance of a pair of Einstein-Podolsky-Rosen type operators is proposed for continuous variable systems. The criterion provides a su…
Quantum gates with neutral atoms: Controlling collisional interactions in time dependent traps
T. Calarco, E. A. Hinds, D. Jaksch +3
We theoretically study specific schemes for performing a fundamental two-qubit quantum gate via controlled atomic collisions by switching microscopic potentials. In particular we c…