Operators

In qgate, quantum circuits are defined as sequences of operators. Please refer below for operators provided in Qgate.

• Gate

• Measurement

• Probability

• If clause

• Reset

• Barrier

Reset

Reset operation resets one or multiple qubits to |0> state.

A qreg should be measured before Reset operation. The qubits is not measured, Reset will raise an error.

# resetting qubit
circuit.append(reset(qreg))

# equivalent code.

measure(ref, qreg)     # qreg is measured somewhere before reset().
...
if_(ref, 1, X(qreg))   # negate qreg when a measured value is 1.
...
reset(qreg)            # resetting qreg to |0>

Barrier

Barrier operation works as barrier on quantum circuit optimization. Barrier operator can accept single or multiple qregs.

# barrier, 1 qreg
circuit.append(barrier(qreg))

# barrier, 2 qregs
circuit.append(barrier([qreg0, qreg1]))