Bayesian estimation

Figure caption: (Top left) Composition of the universe — dark matter makes up about 27%. (Top right) Proposed quantum sensor network in which superconducting qubits are connected in various graph structures. (Bottom) Estimation results showing agreement with the true value and comparison against quantum barriers. Credit: © Tohoku University

Quantum sensor networks upgrade the search for dark matter

Researchers in Japan have shown that linking superconducting qubits in optimal network structures significantly improves detection sensitivity — even in the presence of noise — and opens up applications from quantum radar to GPS.