import {ControlledGate} from 'projectq/src/ops/metagates.js'

public class | source

ControlledGate

Extends:

BasicGate → ControlledGate

Controlled version of a gate.

Note: Use the meta function :func:C() to create a controlled gate

A wrapper class which enables (multi-) controlled gates. It overloads the or-operator, using the first qubits provided as control qubits. The n control-qubits need to be the first n qubits. They can be in separate quregs.

Example:


ControlledGate(gate, 2) | (qb0, qb2, qb3) # qb0 & qb2 are controls
C(gate, 2) | (qb0, qb2, qb3) # This is much nicer.
C(gate, 2) | ([qb0,qb2], qb3) # Is equivalent

Note:
Use :func:`C` rather than ControlledGate, i.e.,


C(X, 2) == Toffoli

Constructor Summary

Public Constructor
public	constructor(gate: BasicGate, n: number)

Member Summary

Public Members
public	gate: *
public	n: *

Method Summary

Public Methods
public	equal(other: *): boolean
public	getInverse(): *
public	or(qubits: Array<Qureg>) Apply the controlled gate to qubits, using the first n qubits as controls.
public	toString(): string

Inherited Summary

From class BasicGate
public static	makeTupleOfQureg(qubits: Qubit \| Qubit[] \| Qureg \| Qureg[]): Qureg[] Convert quantum input of "gate \| quantum input" to internal formatting.
public	interchangeableQubitIndices: *[]
public	copy(): BasicGate
public	equal(other: BasicGate \| Object): boolean
public	generateCommand(qubits: *): Command Helper function to generate a command consisting of the gate and the qubits being acted upon.
public	getInverse()
public	getMerged()
public	inspect(): string
public	or(qubits: *) Operator\| overload which enables the syntax Gate \| qubits.
public	toString()

Public Constructors

public constructor(gate: BasicGate, n: number) source

Override:

BasicGate#constructor

Params:

Name	Type	Attribute	Description
gate	BasicGate		Gate to wrap.
n	number		Number of control qubits.

Public Members

public gate: * source

public n: * source

Public Methods

public equal(other: *): boolean source

Override:

BasicGate#equal

Params:

Name	Type	Attribute	Description
other	*

Return:

boolean

public getInverse(): * source

Override:

BasicGate#getInverse

Return:

public or(qubits: Array<Qureg>) source

Apply the controlled gate to qubits, using the first n qubits as controls.

Note: The control qubits can be split across the first quregs. However, the n-th control qubit needs to be the last qubit in a qureg. The following quregs belong to the gate.

Override:

BasicGate#or

Params:

Name	Type	Attribute	Description
qubits	Array<Qureg>		qubits to which to apply the gate.

ControlledGate

Extends:

Example:

Constructor Summary

Member Summary

Method Summary

Inherited Summary

Public Constructors

public constructor(gate: BasicGate, n: number) source

Override:

Params:

Public Members

public gate: * source

public n: * source

Public Methods

public equal(other: *): boolean source

Override:

Params:

Return:

public getInverse(): * source

Override:

Return:

public or(qubits: Array<Qureg>) source

Override:

Params:

public toString(): string source

Override:

Return: