C4XGate#

class qiskit.circuit.library.C4XGate(label=None, ctrl_state=None)[소스]#

기반 클래스: ControlledGate

The 4-qubit controlled X gate.

This implementation is based on Page 21, Lemma 7.5, of [1], with the use of the relative phase version of c3x, the rc3x [2].

참조

[1] Barenco et al., 1995. https://arxiv.org/pdf/quant-ph/9503016.pdf [2] Maslov, 2015. https://arxiv.org/abs/1508.03273

Create a new 4-qubit controlled X gate.

Attributes

condition_bits#: Get Clbits in condition.

ctrl_state#: Return the control state of the gate as a decimal integer.

decompositions#: Get the decompositions of the instruction from the SessionEquivalenceLibrary.

definition#: Return definition in terms of other basic gates. If the gate has open controls, as determined from self.ctrl_state, the returned definition is conjugated with X without changing the internal _definition.

duration#: Get the duration.

label#: Return instruction label

name#

Get name of gate. If the gate has open controls the gate name will become:

<original_name_o<ctrl_state>

where <original_name> is the gate name for the default case of closed control qubits and <ctrl_state> is the integer value of the control state for the gate.

num_clbits#: Return the number of clbits.

num_ctrl_qubits#

Get number of control qubits.

반환:: The number of control qubits for the gate.
반환 형식:: int

num_qubits#: Return the number of qubits.

params#

Get parameters from base_gate.

반환:: List of gate parameters.
반환 형식:: list
예외 발생:: CircuitError – Controlled gate does not define a base gate

unit#: Get the time unit of duration.

Methods

control(num_ctrl_qubits=1, label=None, ctrl_state=None)[소스]#

Controlled version of this gate.

매개변수:

num_ctrl_qubits (int) – number of control qubits.
label (str or None) – An optional label for the gate [Default: None]
ctrl_state (int or str or None) – control state expressed as integer, string (e.g. ‘110’), or None. If None, use all 1s.

반환:

controlled version of this gate.

반환 형식:

ControlledGate

inverse()[소스]#: Invert this gate. The C4X is its own inverse.