Talk:Cluster state
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[edit]The equation of K fails to define the symbols it uses, making this page completely unhelpful to me. The equation has been lifted (as it seems some of the text) straight from the papers on the subject. 188.220.159.219 (talk)
Agreed, that equation is useless without a definition of the symbolds. 128.100.78.162 (talk) 15:32, 20 March 2013 (UTC)
cluster state for n = 2
[edit]The definition of the cluster state in 1d for n = 2 is not correct, it should read
psi = (|1-> + |0+>) / sqrt(2).
Since |1> is the eigenstate to the -1 eigenvalue of sigmaz, it needs to be combined with |-> instead of |+>, otherwise the minus signs don't cancle and we end up at -|psi> after the application of the correlation operator tensor(sigmaz, sigmax). — Preceding unsigned comment added by PatrickWinkel (talk • contribs) 14:34, 8 April 2022 (UTC)