Nanoscale nuclear quadrupole resonance spectroscopy

A system for measuring the nuclear spin interactions of a nanoscale material with nuclear quadrupole coupling, comprising:

• a sensor for receiving a nanoscale sample, wherein the sensor comprises at least one solid state electronic spin qubit;
• a magnetic field source capable of applying a magnetic field at more than one angle;
• a light source;
• an external spin perturbation source for providing a plurality of external spin perturbation sequences to the sensor, wherein the light source and external spin perturbation source are configured to coherently manipulate the spin state of the spin qubit, wherein each of the external spin perturbation sequences filters for a selected magnetic field frequency produced by the nuclear spins;
• and
• a detector for detecting an output signal given by the strength of the magnetic field at each selected frequency to provide a first nuclear quadrupole resonance spectrum of the sample.