منابع مشابه
M-body Pure State Entanglement
The simple entanglement of N -body N -particle pure states is extended to the more general M -body or M -body N -particle states where N 6= M . Some new features of the M -body N -particle pure states are discussed. An application of the measure to quantify quantum correlations in a Bose-Einstien condensate model is demonstrated.
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We show that pure states of multipartite quantum systems are multiseparable (i.e. give separable density matrices on tracing any party) if and only if they have a generalized Schmidt decomposition. Implications of this result for the quantification of multipartite pure-state entanglement are discussed. Further, as an application of the techniques used here, we show that any purification of a bi...
متن کاملExact and Asymptotic Measures of Multipartite Pure State Entanglement
Charles H. Bennett, Sandu Popescu, Daniel Rohrlich, John A. Smolin, and Ashish V. Thapliyal IBM Research Division, Yorktown Heights, NY 10598, USA — bennetc, [email protected] Isaac Newton Institute, Cambridge University, Cambridge, UK and BRIMS, Hewlett-Packard Labs., Stoke Gifford, Bristol BS12 6QZ, UK — [email protected] School of Physics and Astronomy,Tel Aviv University, Tel Aviv,...
متن کاملApproximate transformations and robust manipulation of bipartite pure state entanglement
We analyze approximate transformations of pure entangled quantum states by local operations and classical communication, finding explicit conversion strategies which optimize the fidelity of transformation. These results allow us to determine the most faithful teleportation strategy via an initially shared partially entangled pure state. They also show that procedures for entanglement manipulat...
متن کاملPure state estimation and the characterization of entanglement.
A connection between the state estimation problem and the separability problem is noticed and exploited to find efficient numerical algorithms to solve the first one. Based on these ideas, we also derive a systematic method to obtain upper bounds on the maximum local fidelity when the states are distributed among several distant parties.
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ژورنال
عنوان ژورنال: International Journal of Quantum Information
سال: 2006
ISSN: 0219-7499,1793-6918
DOI: 10.1142/s0219749906002341