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mindquantum.core.operators

MindQuantum operators library. An operator is composed of a combination of one or more basic gates.

Contains classes representing:

• Qubit operators

• Fermion operators

• TimeEvolution operator

Class

mindquantum.core.operators.FermionOperator	Definition of a Fermion Operator.
mindquantum.core.operators.Hamiltonian	A QubitOperator hamiltonian wrapper.
mindquantum.core.operators.InteractionOperator	Class to store 'interaction opeartors' which are used to configure a ferinonic molecular Hamiltonian.
mindquantum.core.operators.PolynomialTensor	Class to store the coefficient of the fermionic ladder operators in a tensor form.
mindquantum.core.operators.Projector	Projector operator.
mindquantum.core.operators.QubitExcitationOperator	QubitExcitationOperator class.
mindquantum.core.operators.QubitOperator	A sum of terms acting on qubits, e.g., 0.5 * 'X1 X5' + 0.3 * 'Z1 Z2'.
mindquantum.core.operators.TimeEvolution	The time evolution operator that can generate a corresponded circuit.

Function

mindquantum.core.operators.commutator	Compute the commutator of two operators.
mindquantum.core.operators.count_qubits	Calculate the number of qubits on which operator acts before removing the unused qubit.
mindquantum.core.operators.down_index	Down index getter function.
mindquantum.core.operators.get_fermion_operator	Convert the tensor (PolynomialTensor) to FermionOperator.
mindquantum.core.operators.ground_state_of_sum_zz	Find the ground state energy of qubit operator that only has pauli $Z$ term.
mindquantum.core.operators.hermitian_conjugated	Return Hermitian conjugate of FermionOperator or QubitOperator.
mindquantum.core.operators.normal_ordered	Calculate and return the normal order of the FermionOperator.
mindquantum.core.operators.number_operator	Return a fermionic number operator for the reverse_jordan_wigner transform.
mindquantum.core.operators.sz_operator	Return the sz operator.
mindquantum.core.operators.up_index	Up index getter function.