diff --git a/ch03/simulator.py b/ch03/simulator.py
index 611ee60..81b377d 100644
--- a/ch03/simulator.py
+++ b/ch03/simulator.py
@@ -24,7 +24,7 @@
 X = np.array([
 [0, 1],
 [1, 0]
-], dtype=complex) / np.sqrt(2)
+], dtype=complex)
 
 class SimulatedQubit(Qubit):
 def __init__(self):
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<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/crazy4pi314/learn-qc-with-python-and-qsharp/compare/main...codespace-a84d.diff">(-&gt;オリジナル)</a>
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