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<h2>Full example</h2>
<pre><code>namespace Bell {
open Microsoft.Quantum.Canon;
open Microsoft.Quantum.Intrinsic;
operation SetQubitState(desired : Result, target : Qubit) : Unit {
if desired != M(target) {
X(target);
}
}
@EntryPoint()
operation TestBellState(count : Int, initial : Result) : (Int, Int) {
mutable numOnes = 0;
use qubit = Qubit();
for test in 1..count {
SetQubitState(initial, qubit);
let res = M(qubit);
// Count the number of ones we saw:
if res == One {
set numOnes += 1;
}
}
SetQubitState(Zero, qubit);
// Return number of times we saw a |0> and number of times we saw a |1>
Message("Test results (# of 0s, # of 1s): ");
return (count - numOnes, numOnes);
}
}</code></pre>
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