Package com.quantum4j.core.gates

Class SWAPGate

java.lang.Object

com.quantum4j.core.gates.TwoQubitGate

com.quantum4j.core.gates.SWAPGate

All Implemented Interfaces:

Gate

public final class SWAPGate
extends TwoQubitGate

SWAP quantum gate.

A two-qubit gate that exchanges the states of two qubits. The gate permutes basis states as: |00⟩ → |00⟩, |01⟩ → |10⟩, |10⟩ → |01⟩, |11⟩ → |11⟩. The SWAP gate matrix is:

 [1  0  0  0]
 [0  0  1  0]
 [0  1  0  0]
 [0  0  0  1]
 

Field Summary

Fields inherited from class com.quantum4j.core.gates.TwoQubitGate

matrix

Constructor Summary

Constructors

Constructor	Description
SWAPGate()

Method Summary

Modifier and Type	Method	Description
String	name()	Get the name of this gate (e.g., "H", "X", "CNOT").

Methods inherited from class com.quantum4j.core.gates.TwoQubitGate

apply, arity

Methods inherited from class java.lang.Object

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

Constructor Details

SWAPGate

public SWAPGate()

Method Details

name

public String name()

Description copied from interface: Gate

Get the name of this gate (e.g., "H", "X", "CNOT").

Returns:

the gate name