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IBM Quantum Platform
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Eigenvalues

class Eigenvalues

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Bases: abc.ABC

Base class for eigenvalue estimation.

This method should initialize the module and use an exception if a component of the module is not available.


Methods

construct_circuit

abstract Eigenvalues.construct_circuit(mode, register=None)

Construct the eigenvalue estimation quantum circuit.

Parameters

  • mode (str) – ‘matrix’ or ‘circuit’
  • register (QuantumRegister) – register for circuit construction where eigenvalues will be stored.

Returns

object for the eigenvalue estimation circuit.

Return type

QuantumCircuit

Raises

NotImplementedError – not implemented

construct_inverse

Eigenvalues.construct_inverse(mode, circuit)

Construct the inverse eigenvalue estimation quantum circuit.

Parameters

  • mode (str) – construction mode, ‘matrix’ not supported
  • circuit (QuantumCircuit) – the quantum circuit to invert

Returns

object for of the inverted eigenvalue estimation

circuit.

Return type

QuantumCircuit

Raises

  • NotImplementedError – not implemented for matrix mode
  • ValueError – Circuit was not constructed beforehand

get_register_sizes

abstract Eigenvalues.get_register_sizes()

get register sizes

get_scaling

abstract Eigenvalues.get_scaling()

get scaling

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