Talk:Decoherence-free subspaces

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The definition of $g_l$ is unclear (What are $k$, $j$? They are never defined as far as I see...)

The "alternative" section seems wrong. In particular, the subscripts on the |0> and |1> states indicate _separate_ qubits. It also partly overlaps with and partly clashes with the prior subsection. I'm not sure this subsection adds much of anything at all; should it be fixed, or just deleted altogether? Rdviii (talk) 06:52, 12 December 2019 (UTC)[reply]