HartreeFock
class HartreeFock(num_orbitals, num_particles, qubit_mapping='parity', two_qubit_reduction=True, sq_list=None)
A Hartree-Fock initial state.
Parameters
- num_orbitals (
int) – number of spin orbitals, has a min. value of 1. - num_particles (
Union[List[int],int]) – number of particles, if it is a list, the first number is alpha and the second number if beta. - qubit_mapping (
str) – mapping type for qubit operator - two_qubit_reduction (
bool) – flag indicating whether or not two qubit is reduced - sq_list (
Optional[List[int]]) – position of the single-qubit operators that anticommute with the cliffords
Raises
- ValueError – wrong setting in num_particles and num_orbitals.
- ValueError – wrong setting for computed num_qubits and supplied num_qubits.
Attributes
bitstr
Getter of the bit string represented the statevector.
Methods
construct_circuit
HartreeFock.construct_circuit(mode='circuit', register=None)
Construct the statevector of desired initial state.
Parameters
- mode (string) – vector or circuit. The vector mode produces the vector. While the circuit constructs the quantum circuit corresponding that vector.
- register (QuantumRegister) – register for circuit construction.
Returns
statevector.
Return type
QuantumCircuit or numpy.ndarray
Raises
ValueError – when mode is not ‘vector’ or ‘circuit’.
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