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jsteinhardt comments on [LINK] stats.stackexchange.com question about Shalizi's Bayesian Backward Arrow of Time paper - Less Wrong Discussion

3 Post author: p4wnc6 16 May 2012 03:58PM

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Comment author: jsteinhardt 19 May 2012 02:43:36PM 1 point [-]

Evolving into 1/2 x2 + 1/2 x3 is not a quantum operation that can occur in a closed system (it requires at the very least tracing over an auxiliary qubit).