Wikipedia lists HSP problems in abelian and non-abelian groups. So does the following (extensive) compedium.
I searched and found none is a BQP-complete (or even BQP-hard) problem.
There has been a discussion on this site about whether HSP on an abelian group can be BQP complete; Link. The answer is suspected to be negative (due to a known oracle separation; see link).
A version of the shortest vector problem is known to be NP-hard (due to Ajtai, 1998). SVP is an HSP in the non-abelian group.
My query:
Is there a hidden subgroup problem in BQP (or even BQP-Hard) that is suspected not to be in NP?
Is there some reason for not finding any HSP in $BQP\backslash NP$?
Note:
- I am assuming conjecture $BQP \nsubseteq NP$ and $NP \nsubseteq BQP$ holds true.
- I am looking for (full) HSP (both abelian and non-abelian cases).
- Assume this is in the context of (corresponding) decision version for HSP problems.