import {FastForwardingGate} from 'projectq/src/ops/basics.js'

public class | source

FastForwardingGate

Extends:

BasicGate → ClassicalInstructionGate → FastForwardingGate

Direct Subclass:

DeallocateQubitGate, FlushGate, MeasureGate

Base class for classical instruction gates which require a fast-forward through compiler engines that cache / buffer gates. Examples include Measure and Deallocate, which both should be executed asap, such that Measurement results are available and resources are freed, respectively.

Note: The only requirement is that FlushGate commands run the entire circuit. FastForwardingGate objects can be used but the user cannot expect a measurement result to be available for all back-ends when calling only Measure. E.g., for the IBM Quantum Experience back-end, sending the circuit for each Measure-gate would be too inefficient, which is why a final

Example:


eng.flush()

is required before the circuit gets sent through the API.

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()