QCoder Programming Contest 001

Next Problem →

A1: Generate Plus state

Time Limit: 3 sec

Memory Limit: 512 MiB

Score: 100

Problem Statement

Implement the operation of preparing the plus state $\ket{+}$ from the zero state on a quantum circuit $\mathrm{qc}$ with $1$ qubit.

The plus state $\ket{+}$ is defined as

\begin{equation} \ket{+} = \frac{1}{\sqrt{2}} (\ket{0} + \ket{1}). \nonumber \end{equation}

Constraints

Global phase is ignored in judge.
The submitted code must follow the specified format:

from qiskit import QuantumCircuit
 
 
def solve() -> QuantumCircuit:
    qc = QuantumCircuit(1)
    # Write your code here:
 
    return qc

Hints

Open

You can apply the quantum gate $g$ to the $i$ -th qubit of the quantum circuit $\mathrm{qc}$ as follows:

qc.g(i)

Please refer to Construct circuits - Qiskit for circuit examples and the What quantum gates can be used? for available quantum gates.

Please sign in to submit your answer.