Magnetic sensing and imaging using interactions between surface electron spins and solid state spins

A method of manipulating a reporter spin network and a solid state electronic spin system, comprising:

• applying a first pulse sequence of external perturbation to a network of isolated electron-spin quantum bits (qubits) disposed on the surface of the sensor and a solid state electronic spin system disposed below the surface of the sensor,
• wherein the solid state electronic spin system has a spin-state dependent fluorescence;
• applying a second pulse sequence of external perturbation to the network of isolated electron-spin quantum bits (qubits);
• applying a third pulse sequence of external perturbation to the network of isolated electron-spin quantum bits (qubits) and a solid state electronic spin system disposed below the surface of the sensor;
• wherein the first and the third pulse sequence of external perturbations probes the quantum state of at least one electronic-spin quantum bits using at least one shallow state electronic spin system;
• and
• wherein, the quantum state of the reporter spin network is manipulated in the second pulse sequence of external perturbation.

A method of sensing, coherently coupling and imaging a nuclear spin, comprising:

• providing a sample containing at least one nuclear spin in proximity to a sensor;
• wherein the sensor comprises a network of isolated electron-spin quantum bits (qubits) that act as quantum reporter spins disposed on the surface of the sensor;
• and another solid state electronic spin system, wherein the solid state electronic spin system has a spin-state dependent fluorescence;
• exposing the sensor to light and a first and a second external perturbation energy to coherently and independently manipulate at least one electron-spin quantum bit (qubit) and at least one solid state electronic spin system;
• wherein the interaction of the nuclear spin with the qubit and the interaction of the qubit with the solid state electronic spin system changes the spin-state dependent fluorescence of the solid state electronic spin;
• detecting the change in the spin-state dependent fluorescence of the solid state electronic spin system;
• and
• inferring information regarding the nuclear spins of the sample using the detected change in the spin-state dependent fluorescence of the solid state electronic spins.