Quantum Sensing

The energy levels of spin qubits can shift due to the presence of external physical forces and fields such as magnetic and electric fields, strain, and temperature. As such, optically-active spin qubits are widely used as sensors of external forces and fields produced in physical, biological, chemical, and geological specimens. We use lasers and microwave fields to measure optically-active spin qubits and perform such sensing. We are also interested in performing quantum sensing, namely utilizing highly entangled “spin-squeezed” states to develop sensors whose capabilities scale better than the ones of classical sensors.