A system for analyzing signals produced from a sample is described, where the system includes at least one magnetometer, where the magnetometer is capable of detecting magnetic fields produced by a sample. The magnetometer is positioned proximate to the sample, and is miniaturized (e.g. has a size less than 6 cm per side). A noise producing component is configured to uniformly produce noise surrounding the sample and the magnetometer, where the noise produced is capable of inducing stochastic resonance in the sample to amplify characteristic signals of the sample. At least one shielding structure electromagnetically shields the sample and the first magnetometer from external electromagnetic radiation
