EurekAlert  March 25, 2021 The field of quantum sensing has shown a lot of potential for detecting very small signals. However, the ability to truly optimize these sensors has been thwarted by the complexity of control schemes. A team of researchers in the US (Johns Hopkins University, University of Maryland) applied filter functions and optimal quantum control theories to a use case of qubit sensors that mirror a classic problem in signal detection theory: optimal detection of a known signal from background noise with a controllable quantum sensor. They obtained analytical insight into the optimal control protocol when the background […]