[m-watson]

"The quantum computers you interact with in IBM Quantum use a physical type of qubit called a superconducting transmon qubit, which is made from superconducting materials such as niobium and aluminum, patterned on a silicon substrate. Such systems are not natural qubits, but are instead formed by isolating two energy levels out of many to form our approximate qubit."

https://quantum-computing.ibm.com/composer/docs/iqx/guide/th...