TwoQubitReduction

class qiskit.opflow.converters.TwoQubitReduction(num_particles)

Bases : ConverterBase

Deprecated: Two qubit reduction converter which eliminates the central and last qubit in a list of Pauli that has diagonal operators (Z,I) at those positions.

Chemistry specific method: It can be used to taper two qubits in parity and binary-tree mapped fermionic Hamiltonians when the spin orbitals are ordered in two spin sectors, (block spin order) according to the number of particles in the system.

Obsolète depuis la version 0.24.0: The class qiskit.opflow.converters.two_qubit_reduction.TwoQubitReduction is deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit https://qisk.it/opflow_migration.

Paramètres:

num_particles (int | List[int] | Tuple[int, int]) – number of particles, if it is a list, the first number is alpha and the second number if beta.

Methods

convert(operator)

Converts the Operator to tapered one by Z2 symmetries.

Paramètres:

operator (OperatorBase) – the operator

Renvoie:

A new operator whose qubit number is reduced by 2.

Type renvoyé:

OperatorBase