QUIET

Fermilab has twin laboratories that will probe superconducting qubits: QUIET is a new detector 100 meters underground and its counterpart is on the surface called LOUD, which began operations in 2022. The differences between the two detectors’ observations will allow researchers to assess how cosmic radiation affects qubit performance.

A new underground research space at Fermilab allows scientists to study superconducting quantum qubits in an environment with significantly reduced interference caused by cosmic rays. The laboratory, called QUIET, has a twin at the Earth’s surface named LOUD. This arrangement allows for controlled direct comparisons of quantum sensor and computing experiments.