Superconducting quantum systems
Viable quantum computing technology relies on the development of quantum bits, or qubits, that can maintain quantum information for periods of time longer than 1 second. At Fermilab, scientists and engineers are turning to existing particle accelerator technology to achieve this goal. By using ultraefficient superconducting resonators — one of the core technologies for advancing particle accelerators — and 3-D, state-of-the-art qubits, Fermilab is poised to extend coherence times by orders of magnitude beyond what is currently possible.
The coherence time is a function of the system’s quality factor, colloquially known as the “Q.” Drawing on the lab’s decades of world-leading expertise in superconducting technology and exploiting existing infrastructure, Fermilab scientists and engineers have designed superconducting resonators that routinely achieve a Q more than 1,000 times better than existing resonators used in quantum computing. The resonators’ high Q values could help extend qubit coherence times to potentially 2 or 3 seconds.