Part 3/9:
A superconducting magnet, essentially a coil of superconducting wire kept at cryogenic temperatures, generates an intense magnetic field. When the electron's spin aligns downward, it represents the system's lowest energy state. To prevent thermal energy from influencing the spin orientation, researchers cool the entire apparatus to just above absolute zero. At these temperatures, the electron is reliably in the spin-down state.
Writing Information onto a Qubit
Information can be encoded into a qubit by transition from the spin-down state to the spin-up state. This transition is induced by a precisely timed pulse of microwaves, calibrated to a specific frequency, which is influenced by the magnetic field generated by the superconducting magnet.