Package com.quantum4j.transpile.passes

Class GateCommutationPass

java.lang.Object

com.quantum4j.transpile.passes.GateCommutationPass

All Implemented Interfaces:

TranspilerPass

public final class GateCommutationPass
extends Object
implements TranspilerPass

Local commutation optimizer. Safely bubbles commuting gates earlier in the circuit without crossing non-commuting operations or measurements. Conservative rules:

• Single-qubit gates on different qubits commute.
• RZ on control commutes with CX(control,target).
• RX on target commutes with CX(control,target).
• Never move across measurements.

Constructor Summary

Constructors

Constructor	Description
GateCommutationPass()	Create the gate commutation pass.

Method Summary

Modifier and Type	Method	Description
QuantumCircuit	apply(QuantumCircuit circuit)	Apply this pass to the given circuit and return a new circuit.
String	name()	Human-readable name of this pass (for logging, debugging, profiling).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GateCommutationPass

public GateCommutationPass()

Create the gate commutation pass.

Method Details

name

public String name()

Description copied from interface: TranspilerPass

Human-readable name of this pass (for logging, debugging, profiling).

Specified by:

name in interface TranspilerPass

Returns:

pass identifier

apply

public QuantumCircuit apply(QuantumCircuit circuit)

Description copied from interface: TranspilerPass

Apply this pass to the given circuit and return a new circuit. Implementations should not mutate the input circuit.

Specified by:

apply in interface TranspilerPass

Parameters:

circuit - input circuit (not mutated)

Returns:

transformed circuit