Remote preparation of arbitrary ensembles and quantum bit commitment
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
The Hughston-Jozsa-Wootters theorem shows that any finite ensemble of quantum states can be prepared "at a distance," and it has been used to demonstrate the insecurity of all bit commitment protocols based on finite quantum systems without superselection rules. In this paper, we prove a generalized HJW theorem for arbitrary ensembles of states on a C*-algebra. We then use this result to demonstrate the insecurity of bit commitment protocols based on infinite quantum systems, and quantum systems with Abelian superselection rules.
Originalsprog | Engelsk |
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Tidsskrift | Journal of Mathematical Physics |
Vol/bind | 45 |
Udgave nummer | 12 |
Sider (fra-til) | 4920-4931 |
ISSN | 0022-2488 |
DOI | |
Status | Udgivet - 2004 |
Eksternt udgivet | Ja |
ID: 289119053