From bc72f239920d127725450a4d0c853d6be26ac417 Mon Sep 17 00:00:00 2001
From: Guilherme Marques <guilhermepereiramarques@hotmail.com>
Date: Tue, 10 Oct 2023 07:51:09 -0300
Subject: [PATCH 1/2] Added Controlled Hadamard Gate

---
 .../org/redfx/strange/gate/Chadamard.java     | 39 ++++++++++++++
 .../redfx/strange/test/TwoQubitGateTests.java | 51 ++++++++++++++++++-
 2 files changed, 88 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/org/redfx/strange/gate/Chadamard.java

diff --git a/src/main/java/org/redfx/strange/gate/Chadamard.java b/src/main/java/org/redfx/strange/gate/Chadamard.java
new file mode 100644
index 0000000..701c789
--- /dev/null
+++ b/src/main/java/org/redfx/strange/gate/Chadamard.java
@@ -0,0 +1,39 @@
+package org.redfx.strange.gate;
+
+import org.redfx.strange.Complex;
+
+public class Chadamard extends TwoQubitGate {
+    Complex[][] matrix =  new Complex[][]{
+            {Complex.ONE,Complex.ZERO,Complex.ZERO,Complex.ZERO},
+            {Complex.ZERO,Complex.ONE,Complex.ZERO,Complex.ZERO},
+            {Complex.ZERO,Complex.ZERO,Complex.HC,Complex.HC},
+            {Complex.ZERO,Complex.ZERO,Complex.HC,Complex.HCN}
+    };
+
+    /**
+     * <p>Constructor for Chadamard.</p>
+     */
+    public Chadamard() {
+    }
+
+    /**
+     * <p>Constructor for Chadamard.</p>
+     *
+     * @param a a int
+     * @param b a int
+     */
+    public Chadamard(int a, int b) {
+        super(a,b);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Complex[][] getMatrix() {
+        return matrix;
+    }
+
+    /** {@inheritDoc} */
+    @Override public String getCaption() {
+        return "Chadamard";
+    }
+}
diff --git a/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java b/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
index 60426a4..6fc8195 100644
--- a/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
+++ b/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
@@ -34,8 +34,6 @@
 
 import org.junit.jupiter.api.Test;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
 import org.redfx.strange.Program;
 import org.redfx.strange.Qubit;
 import org.redfx.strange.Result;
@@ -46,6 +44,10 @@
 import org.redfx.strange.gate.Measurement;
 import org.redfx.strange.gate.Swap;
 import org.redfx.strange.gate.X;
+import org.redfx.strange.gate.Hadamard;
+import org.redfx.strange.gate.Chadamard;
+
+import static org.junit.jupiter.api.Assertions.*;
 
 /**
  *
@@ -309,4 +311,49 @@ public void IMcnot10() {
             IllegalArgumentException.class,
             () -> p.addStep(new Step(new Cnot(1,0))));
     }
+
+    @Test
+    public void chadamardGate() {
+        int[] results = new int[2];
+        for (int i = 0; i < 100; i++) {
+            Program p = new Program(2,
+                    new Step(new Hadamard(0)),
+                    new Step(new Chadamard(0,1)));
+            Result res = runProgram(p);
+            Qubit[] qubits = res.getQubits();
+            results[qubits[1].measure()]++;
+        }
+        assertTrue(results[0] > 10);
+        assertTrue(results[1] > 10);
+    }
+
+    @Test
+    public void chadamardXGate() {
+        int[] results = new int[2];
+        for (int i = 0; i < 100; i++) {
+            Program p = new Program(2,
+                    new Step(new X(0)),
+                    new Step(new Chadamard(0,1)));
+            Result res = runProgram(p);
+            Qubit[] qubits = res.getQubits();
+            results[qubits[1].measure()]++;
+        }
+        assertTrue(results[0] > 10);
+        assertTrue(results[1] > 10);
+    }
+
+    @Test
+    public void chadamardNotApplied() {
+        int[] results = new int[2];
+        for (int i = 0; i < 100; i++) {
+            Program p = new Program(2,
+                    new Step(new Chadamard(0,1)));
+            Result res = runProgram(p);
+            Qubit[] qubits = res.getQubits();
+            results[qubits[1].measure()]++;
+        }
+        assertEquals(100, results[0]);
+        assertEquals(0, results[1]);
+    }
+
 }

From cd97335321ef04c6e5f1ca545d71a844c780144b Mon Sep 17 00:00:00 2001
From: Guilherme Marques <guilhermepereiramarques@hotmail.com>
Date: Tue, 10 Oct 2023 07:52:57 -0300
Subject: [PATCH 2/2] Added Controlled Hadamard Gate

---
 src/test/java/org/redfx/strange/test/TwoQubitGateTests.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java b/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
index 6fc8195..c2e2a5d 100644
--- a/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
+++ b/src/test/java/org/redfx/strange/test/TwoQubitGateTests.java
@@ -34,6 +34,8 @@
 
 import org.junit.jupiter.api.Test;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import org.redfx.strange.Program;
 import org.redfx.strange.Qubit;
 import org.redfx.strange.Result;
@@ -47,8 +49,6 @@
 import org.redfx.strange.gate.Hadamard;
 import org.redfx.strange.gate.Chadamard;
 
-import static org.junit.jupiter.api.Assertions.*;
-
 /**
  *
  * @author johan