IQP¶

class IQP(interactions)[ソース]

Instantaneous quantum polynomial (IQP) circuit.

The circuit consists of a column of Hadamard gates, a column of powers of T gates, a sequence of powers of CS gates (up to $$\frac{n^2-n}{2}$$ of them), and a final column of Hadamard gates, as introduced in [1].

The circuit is parameterized by an n x n interactions matrix. The powers of each T gate are given by the diagonal elements of the interactions matrix. The powers of the CS gates are given by the upper triangle of the interactions matrix.

Reference Circuit:

Expanded Circuit:

References:

[1] M. J. Bremner et al. Average-case complexity versus approximate simulation of commuting quantum computations, Phys. Rev. Lett. 117, 080501 (2016). arXiv:1504.07999

Create IQP circuit.

パラメータ

interactions (Union[List, array]) – input n-by-n symmetric matrix.

CircuitError – if the inputs is not as symmetric matrix.

Attributes

ancillas

Returns a list of ancilla bits in the order that the registers were added.

List[AncillaQubit]

calibrations

Return calibration dictionary.

The custom pulse definition of a given gate is of the form

{『gate_name』: {(qubits, params): schedule}}

dict

clbits

Returns a list of classical bits in the order that the registers were added.

List[Clbit]

data

Return the circuit data (instructions and context).

a list-like object containing the tuples for the circuit’s data.

Each tuple is in the format (instruction, qargs, cargs), where instruction is an Instruction (or subclass) object, qargs is a list of Qubit objects, and cargs is a list of Clbit objects.

QuantumCircuitData

extension_lib = 'include "qelib1.inc";'
global_phase

Return the global phase of the circuit in radians.

Union[ParameterExpression, float]

instances = 9

The user provided metadata associated with the circuit

The metadata for the circuit is a user provided dict of metadata for the circuit. It will not be used to influence the execution or operation of the circuit, but it is expected to be passed between all transforms of the circuit (ie transpilation) and that providers will associate any circuit metadata with the results it returns from execution of that circuit.

dict

num_ancillas

Return the number of ancilla qubits.

int

num_clbits

Return number of classical bits.

int

num_parameters

Convenience function to get the number of parameter objects in the circuit.

int

num_qubits

Return number of qubits.

int

parameters

Convenience function to get the parameters defined in the parameter table.

ParameterView

prefix = 'circuit'
qubits

Returns a list of quantum bits in the order that the registers were added.

List[Qubit]