Note

This is the documentation for the current state of the development branch of Qiskit Experiments. The documentation or APIs here can change prior to being released.

PreparationBasis

class PreparationBasis(name)

Abstract base class for a tomography preparation basis.

Subclasses should implement the following abstract methods to define a preparation basis:

• The circuit() method which returns the logical preparation QuantumCircuit for basis element index on the specified qubits. This circuit should be a logical circuit on the specified number of qubits and will be remapped to the corresponding physical qubits during transpilation.

• The matrix() method which returns the density matrix prepared by the bases element index on the specified qubits.

• The index_shape() method which returns the shape of allowed basis indices for the specified qubits, and their values.

• The matrix_shape() method which returns the shape of subsystem dimensions of the density matrix state on the specified qubits.

Initialize a basis.

Parameters:

name (str) – the name for the basis.

Attributes

PreparationBasis.name

Return the basis name

Methods

PreparationBasis.circuit(index[, qubits])	Return the basis preparation circuit.
PreparationBasis.index_shape(qubits)	Return the shape for the specified number of indices.
PreparationBasis.matrix(index[, qubits])	Return the density matrix data array for the index and qubits.
PreparationBasis.matrix_shape(qubits)	Return the shape of subsystem dimensions of the state attr:~matrix.