Expérimental
Electron paramagnetic resonance (EPR) is a powerful spectroscopy method which can identify spins and paramagnetic species and quantify their interactions with their environment. Because of the weak spin-microwave coupling, conventional EPR spectroscopy has a low sensitivity which limits its use to samples of macroscopic size. Recent experiments demonstrated that superconducting quantum circuits have the potential to drastically enhance the spin detection sensitivity down to the detection of single spins within a 1 um volume probe using properties unique to quantum mechanics. However, these demonstrations have so far been done using well-known model spin systems and in restrictive conditions: very narrow spin and detector linewidths, low microwave losses, and implanted spin species. The internship project will center on developing and building a scanning probe allowing to perform EPR spectroscopy and imaging on a nearby surface with a resolution of a few spins.