B1: Generate State $e^{i\theta}\ket{0}$

Problem Statement

You are given a real number $\theta$. Implement the operation of preparing the state $\ket{\psi}$ from the zero state on a quantum circuit $\mathrm{qc}$ with $1$ qubit.

The quantum state $\ket{\psi}$ is defined as

Constraints

• $0 \leq \theta < 2\pi$
• In this problem, the state with different global phase will not be considered correct.
• The submitted code must follow the specified format:

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