Quantum sensor system for sensing electromagnetic radiation

A method for sensing electromagnetic, EM, radiation, comprising the steps of:

• shaping and/or focusing the EM radiation to generate an inhomogeneous field distribution in an area;
• receiving the EM radiation with at least two quantum sensors which are arranged at different locations in the area, each of the quantum sensors comprising a sensing volume which is configured to interact with the EM radiation;
• detecting an interaction of the EM radiation with each sensing volume, wherein the respective interaction is indicative of a power level of the EM radiation at the location of the sensing volume;
• and
• determining a signal characteristic of the EM radiation based on a correlation of the power levels at the locations of the sensing volumes.

A quantum sensor system for sensing electromagnetic, EM, radiation, comprising:

• a quantum sensor which is arranged to receive the EM radiation, wherein the quantum sensor comprises a sensing volume which is configured to interact with the EM radiation in at least two distinguishable ways based on at least two different species of atoms and/or at least two different atomic transitions;
• at least one detector configured to detect interactions of the EM radiation with the sensing volume in each of the at least two distinguishable ways;
• and
• a processor which is configured to determine a signal characteristic of the EM radiation based on a correlation of the detected interactions.