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Return the sy operator.
openfermion.hamiltonians.sy_operator(
n_spatial_orbitals: int
) -> openfermion.ops.FermionOperator
\[ \begin{align} S^{y} = \frac{-i}{2}\sum_{i = 1}^{n}(S^{+} - S^{-}) \end{align} \]
Args | |
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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.