Advanced_Usage.md

• Basic things to do for an experiment
• 1. Initialize
  • How to Initialize a qubit ?
  • How to initialize without circuit ?
• 2. Drawing Circuits
  • How to add gates in a quantum circuit ?
  • How to add 2/3 qubit gates in a quantum circuit ?
  • How to measure a qubit ?
  • How to apply a conditional gate based on a classical measurement ?
• 3. Connecting to Backend/device/simulator
• 4. How to retrieve results after experiment
• 5. How to plot data

Basic things to do for an experiment

1. Initialize

How to Initialize a qubit ?

1. Create the Circuit
2. use the initializer function = circuit.initialize([a,b],which_qubit) where a,b are coefficients of 0 and 1 respectively for a initial state $a|0\rangle + b|1\rangle$

• By default its all qubits are initialized to $|0\rangle$ state
• for a superposition add a Hadamard gate to get $\frac{1}{\sqrt{2}}(|0\rangle + |1\rangle)$ state

How to initialize without circuit ?

1. use sv = Statevector.from_label('000') = to create a labelled state $|000\rangle$
2. use sv.evolve(circuit) = to evolve the qubits based on a circuit then plot the results
3. get the data using sv.data
4. plot it using the visualization tools

2. Drawing Circuits

How to add gates in a quantum circuit ?

How to add 2/3 qubit gates in a quantum circuit ?

How to measure a qubit ?

How to apply a conditional gate based on a classical measurement ?

3. Connecting to Backend/device/simulator

NOTE : You can run experiments only until you have credits , once credits run out you cannot submit jobs. Credits get refreshed after a job completes

4. How to retrieve results after experiment

5. How to plot data