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Oct 31, 2014 at 9:02 vote accept Goodies
Oct 23, 2014 at 18:54 comment added SMeznaric What you have here is the matrix applied to the first qubit only. This is shorthand for writing $H\otimes 1$. This tensor product yields a 4x4 matrix.
Oct 23, 2014 at 16:08 history edited DanielSank CC BY-SA 3.0
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Oct 23, 2014 at 8:03 answer added Punga timeline score: 0
Oct 23, 2014 at 7:36 history asked Goodies CC BY-SA 3.0