# GR¶

class GR(num_qubits, theta, phi)[fuente]

Bases: QuantumCircuit

Global R gate.

Circuit symbol:

     ┌──────────┐
q_0: ┤0         ├
│          │
q_1: ┤1 GR(ϴ,φ) ├
│          │
q_2: ┤2         ├
└──────────┘


The global R gate is native to atomic systems (ion traps, cold neutrals). The global R can be applied to multiple qubits simultaneously.

In the one-qubit case, this is equivalent to an R(theta, phi) operation, and is thus reduced to the RGate. The global R gate is a direct sum of R operations on all individual qubits.

$GR(\theta, \phi) = \exp(-i \sum_{i=1}^{n} (\cos(\phi)X_i + \sin(\phi)Y_i) \theta/2)$

Expanded Circuit:

Create a new Global R (GR) gate.

Parámetros
• num_qubits (int) – number of qubits.

• theta (float) – rotation angle about axis determined by phi

• phi (float) – angle of rotation axis in xy-plane

Attributes

ancillas

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

Tipo del valor devuelto

List[AncillaQubit]

calibrations

Return calibration dictionary.

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

{“gate_name”: {(qubits, params): schedule}}

Tipo del valor devuelto

dict

clbits

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

Tipo del valor devuelto

List[Clbit]

data

Return the circuit data (instructions and context).

Devuelve

a list-like object containing the CircuitInstructions for each instruction.

Tipo del valor devuelto

QuantumCircuitData

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

Return the global phase of the circuit in radians.

Tipo del valor devuelto

Union[ParameterExpression, float]

instances = 87

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.

Tipo del valor devuelto

dict

num_ancillas

Return the number of ancilla qubits.

Tipo del valor devuelto

int

num_clbits

Return number of classical bits.

Tipo del valor devuelto

int

num_parameters

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

Tipo del valor devuelto

int

num_qubits

Return number of qubits.

Tipo del valor devuelto

int

op_start_times

Return a list of operation start times.

This attribute is enabled once one of scheduling analysis passes runs on the quantum circuit.

Tipo del valor devuelto

List[int]

Devuelve

List of integers representing instruction start times. The index corresponds to the index of instruction in QuantumCircuit.data.

Muestra

AttributeError – When circuit is not scheduled.

parameters

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

Tipo del valor devuelto

ParameterView

prefix = 'circuit'
qubits

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

Tipo del valor devuelto

List[Qubit]