qiskit.chemistry.components.initial_states.VSCF

class VSCF(basis)

Initial state for vibrational modes.

Creates an occupation number vector as defined in Ollitrault Pauline J., Chemical science 11 (2020): 6842-6855. e.g. for 2 modes with 4 modals per mode it creates: |1000 1000>

Parameters

basis (List[int]) – Is a list defining the number of modals per mode. E.g. for a 3 modes system with 4 modals per mode basis = [4,4,4]

__init__(basis)

Parameters

basis (List[int]) – Is a list defining the number of modals per mode. E.g. for a 3 modes system with 4 modals per mode basis = [4,4,4]

Methods

__init__(basis)	type basis List[int]
construct_circuit([mode, register])	Construct the statevector of desired initial state.

Attributes

bitstr

Getter of the bit string represented the statevector.

property bitstr

Getter of the bit string represented the statevector.

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’.