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|
Return the sx operator.
openfermion.hamiltonians.sx_operator(
n_spatial_orbitals: int
) -> openfermion.ops.FermionOperator
$$
\begin{align}
S^{x} = \frac{1}{2}\sum_{i = 1}^{n}(S^{+} + S^{-})
\end{align}
$$
Args | |
|---|---|
n_spatial_orbitals
|
number of spatial orbitals (n_qubits // 2). |
Returns | |
|---|---|
| operator (FermionOperator): corresponding to the sx operator over n_spatial_orbitals. |
Note:
The indexing convention used is that even indices correspond to spin-up (alpha) modes and odd indices correspond to spin-down (beta) modes.