Characterizing two-dimensional superconductivity via nanoscale noise magnetometry with single-spin qubits
Pavel E. Dolgirev, Shubhayu Chatterjee, Ilya Esterlis, Alexander Zibrov, Mikhail D. Lukin, Norman Y. Yao, Eugene Demler
Abstract
Atomically thin materials are highly versatile platforms to sharpen our understanding of two-dimensional superconductivity. However, such materials are not amenable to many conventional experimental techniques used for three-dimensional superconductors, making it difficult to probe the origin and symmetry of Cooper pairing. To investigate superconducting transitions and access the pairing wave function, the authors propose a wireless, table-top probe - noise magnetometry by a single-spin qubit. The technique can elucidate various nonlocal transport regimes inaccessible to other probes. It can also detect elusive collective modes like Josephson plasmons.