Qutebits Documentation.md

Qutebits Documentation

There are 2 main classes: QuantumCircuit and Executor, and an enum QGate :

QuantumCircuit - used to define a new Quantum Circuit and add QGates to the QuantumCircuit.

Executor - actually executes the QuantumCircuit

QGate is an enum which has options of all the gates supported.

QGate

is a Enum whihc can be one of the following values:

class QGate(Enum):
    HADAMARD = "H"
    PAULI_X = "X"
    PAULI_Y = "Y"
    PAULI_Z = "Z"
    CNOT_START = "."
    CNOT_END = "x"
    IDENTITY = "I"

QuantumCircuit

Initializer:

QuantumCircuit(no_qubits: int)

no_qubits - Number of qubits in the Quantum Circuit. It is assumed that same number of classical bits wills be there for use in measurement.

Methods:

draw()

Print out the quantum circuit using basic ascii text

cx(start, end)

Applies a Controlled NOT gate on theQuantumCircuit with the start index as the control qubit and the end qubit as the target qubit where both start and end are the indices of the qubits in the QuantumCircuit which be in the range 0 to no_qubits-1

Note: Applying CNOT gate on non-adjacent qubits is not yet supported

h(index)

Applies a Hadamard gate on the qubit at index index

x(index)

Applies a X gate on the qubit at index index

y(index)

Applies a Y gate on the qubit at index index

z(index)

Applies a Z gate on the qubit at index index

Executor

Initializer:

Executor(qc: QuantumCircuit)

qc - The QuantumCircuit Object to be executed

Methods:

get_statevector()

returns the final statevector of the Quantum Circuit as a list

get_probs()

returns the probabilities of all computational basis state as a list

measure_all(shots=8096)

shots - the number of times the circuit is executed, default value is 8096.

Executes the quantum circuit shots number of times and returns a counts list where the i-th element represents the number of times the Quantum State collapsed to i-th bitstring state.