static void Main(string[] args)
{
#region Setup
// We begin by defining a quantum simulator to be our target
// machine.
var sim = new QuantumSimulator(throwOnReleasingQubitsNotInZeroState: true);
#endregion
#region Measuring One Qubit
// In this region, we call the MeasurementOneQubit operation
// from Measurement.qs, which prepares a qubit in the |+〉 ≔ H|0〉
// state and asserts that the probability of observing a Zero
// result is 50%.
// Thus, we will run the operation several times and report
// the mean.
var averageResult = Enumerable.Range(0, 100).Select((idx) =>
MeasurementOneQubit.Run(sim).Result == Simulation.Core.Result.One ? 1 : 0
).Average();
System.Console.WriteLine($"Frequency of 〈0| given H|0〉: {averageResult}");
Pause();
#endregion
#region Measuring Two Qubits
// Next, we generalize to consider measuring two qubits, each
// in the Z-basis. The MeasurementTwoQubits operation
// returns a (Result, Result), one for each qubit; let's print
// out a few such measurements.
foreach (var idxMeasurment in Enumerable.Range(0, 8))
{
var results = MeasurementTwoQubits.Run(sim).Result;
System.Console.WriteLine($"Measured HH|00〉 and observed {results}.");
}
Pause();
#endregion
#region Measuring in the Bell Basis
// Finally, we demonstrate that if we measure each half of
// the entangled pair CNOT₀₁ · H |00〉 = (|00〉 + |11〉) / sqrt(2),
// the parity of the observed results is always positive. That is,
// unlike in the previous example, the two Result values are
// always the same.
foreach (var idxMeasurment in Enumerable.Range(0, 8))
{
var results = MeasurementBellBasis.Run(sim).Result;
System.Console.WriteLine($"Measured CNOT₀₁ · H |00〉 and observed {results}.");
}
#endregion
System.Console.WriteLine("\n\nPress Enter to continue...\n\n");
System.Console.ReadLine();
}
/// <summary>
/// Sample to show that one can substitue the operation factory
/// to run on different types of machines.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
var factory = new ConsoleDriver(); //Using different Factory
Console.WriteLine("Hadamard to Qasm");
MeasurementOneQubit.Run(factory).Wait();
Console.WriteLine("Press Enter to continue...");
Console.ReadLine();
Console.WriteLine("Measurement bell curve to Qasm");
MeasurementBellBasis.Run(factory).Wait();
Console.WriteLine("Press Enter to continue...");
Console.ReadLine();
}