Book incorrect on table 7.3 entry

[mik3hall]

Not a problem with the code examples.

I was referring back to the book to see the explanation there for ancilla qubits and reversibility.

One entry in table 7.3 doesn't appear correct.

It shows |101> resulting in |100> but without both control bits flipped there should be no change?

import org.redfx.strange.Program;
import org.redfx.strange.Qubit;
import org.redfx.strange.QuantumExecutionEnvironment;
import org.redfx.strange.local.SimpleQuantumExecutionEnvironment;
import org.redfx.strange.Result;
import org.redfx.strange.Step;
import org.redfx.strange.gate.Toffoli;
import org.redfx.strange.gate.X;

public class ToffoliTest {

public static void main(String... args) {
	QuantumExecutionEnvironment simulator = new SimpleQuantumExecutionEnvironment();
	System.out.println("|101> -> |101>");
    Program p = new Program(3,
       new Step(new X(2),new X(0)),
       new Step(new Toffoli(2,1,0)));
    Result res = simulator.runProgram(p);
    Qubit[] qubits = res.getQubits();
    for (int i=0; i<qubits.length; i++) {
    	System.out.println(i + " " + qubits[i].measure());
    }
}

}

ToffoliTest
|101> -> |101>
0 1
1 0
2 1
(base) mjh@MacBook-Pro-2 quantumjava