Return the indices for n_electrons in n_qubits under JW encoding
openfermion.linalg.jw_number_indices(
n_electrons, n_qubits
)
Calculates the indices for all possible arrangements of n-electrons
within n-qubit orbitals when a Jordan-Wigner encoding is used.
Useful for restricting generic operators or vectors to a particular
particle number space when desired
Args |
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n_electrons(int): Number of particles to restrict the operator to
n_qubits(int): Number of qubits defining the total state
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Returns |
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indices(list): List of indices in a 2^n length array that indicate
the indices of constant particle number within n_qubits
in a Jordan-Wigner encoding.
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