Stoquastic Hamiltonian
= Stoquastic Hamiltonian
A <stoquastic Hamiltonian> is a real Hermitian <Hamiltonian operator> with nonpositive off-diagonal entries in a specified basis, usually the <computational basis>. The property depends on that basis. <Permutation matrices> in a <quantum circuit>'s propagation terms and $|-\rangle\langle-|$ input penalties give a useful family of such operators.