منابع مشابه
Unconditionally Secure Multipartite Quantum Key Distribution
We consider the problem of secure key distribution among n trustful agents: the goal is to distribute an identical random bit-string among the n agents over a noisy channel such that eavesdroppers learn little about it. We study the general situation where the only resources required are secure bipartite key distribution and authenticated classical communication. Accordingly, multipartite quant...
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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...
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John A. Smolin,* Frank Verstraete, and Andreas Winter IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA Institute for Quantum Information, Caltech 107-81, Pasadena, California 91125, USA Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str.1, 85748 Garching, Germany Department of Mathematics, University of Bristol, University Walk, Bristol BS8 1TW, United Kingdom Rece...
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We propose a protocol Dn for faithfully teleporting an arbitrary n-qudit state with the tensor product state (TPS) of n generalized Bell states (GBSs) as the quantum channel. We also put forward explicit protocol D′ n and D′′ n for faithfully teleporting an arbitrary n-qudit state with two classes of 2n-qudit GESs as the quantum channel, where the GESs are a kind of genuine entangled states we ...
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Durch das MediSign Projekt soll gezeigt werden, wie man durch Einsatz von RFID-Technologie und digitaler Signaturen die Vertriebswege von Medikamenten sichern kann. MediSign kann dabei einen fälschungssicheren Transport der Ware vom Produzenten über beliebige Zwischenstufen bis hin zum Konsumenten garantieren. MediSign versteht sich als Dienstleister eines Services zur digitalen Absicherung, de...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2005
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.71.042336