Summary

  • 1 minute

Congratulations! You successfully created your first Q# program.

The Quantum Development Kit (QDK) provides you with everything you need to start writing your own quantum algorithms.

You covered a lot in this module. Here's some of the key concepts that you learned:

  • A Q# program must have an entry point, which is the Main operation by default.
  • To allocate qubits in Q#, use the use keyword and the Qubit type. Qubits are always in the $\ket{0}$ state when you allocate them.
  • A superposition state is a quantum phenomenon where a qubit is in a combination of both the $\ket{0}$ state and the $\ket{1}$ state. If a qubit is in the $\ket{0}$ state, then you can use the H operation to put the qubit into an equal superposition state.
  • To measure qubits in the Pauli-Z basis in Q#, use the M operation. When you measure a qubit that's in a superposition state, the measurement always produces 0 or 1.
  • Q# has programming structures that are common to all modern programming languages, such as for loops and if statements. Combine typical programming structures with quantum-specific features all in a single Q# program.

Next steps

The QDK includes a set of built-in Q# samples that you can use to learn more about Q# and quantum computing. To view the samples, open a blank Q# file in Visual Studio Code and type sample, then select the sample that you want to view from the list of options. For example, you can find the Q# code that you wrote to generate a random bit when you choose Random Bits sample.

Learn more