# AND¶

class AND(num_variable_qubits, flags=None, mcx_mode='noancilla')[ソース]

A circuit implementing the logical AND operation on a number of qubits.

For the AND operation the state $$|1\rangle$$ is interpreted as True. The result qubit is flipped, if the state of all variable qubits is True. In this format, the AND operation equals a multi-controlled X gate, which is controlled on all variable qubits. Using a list of flags however, qubits can be skipped or negated. Practically, the flags allow to skip controls or to apply pre- and post-X gates to the negated qubits.

The AND gate without special flags equals the multi-controlled-X gate:

Using flags we can negate qubits or skip them. For instance, if we have 5 qubits and want to return True if the first qubit is False and the last two are True we use the flags [-1, 0, 0, 1, 1].

Create a new logical AND circuit.

パラメータ
• num_variable_qubits (int) – The qubits of which the OR is computed. The result will be written into an additional result qubit.

• flags (Optional[List[int]]) – A list of +1/0/-1 marking negations or omissions of qubits.

• mcx_mode (str) – The mode to be used to implement the multi-controlled X gate.

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]