Hoffbauer

Ideen,Fundstücke im Netz, Gedanken

27 Oktober 2005

 

Citebase - A Lorentz-invariant look at quantum clock synchronization protocols based on distributed entanglement

A Lorentz-invariant look at quantum clock synchronization protocols based on distributed entanglement

Authors: Yurtsever, Ulvi; Dowling, Jonathan P.


Recent work has raised the possibility that quantum information theory techniques can be used to synchronize atomic clocks nonlocally. One of the proposed algorithms for quantum clock synchronization (QCS) requires distribution of entangled pure singlets to the synchronizing parties. Such remote entanglement distribution normally creates a relative phase error in the distributed singlet state which then needs to be purified asynchronously. We present a fully relativistic analysis of the QCS protocol which shows that asynchronous entanglement purification is not possible, and, therefore, that the proposed QCS scheme remains incomplete. We discuss possible directions of research in quantum information theory which may lead to a complete, working QCS protocol.

Comment: 5 pages
Comments: Kommentar veröffentlichen



<< Home

Archives

Oktober 2005   November 2005   Dezember 2005   Januar 2006   Februar 2006   Juni 2006   Juli 2006   Oktober 2006   November 2006   Februar 2007   November 2007   Januar 2010   September 2010  

This page is powered by Blogger. Isn't yours?