Quantum sensing is a technology that uses the principles of quantum mechanics to measure physical quantities with high precision. It takes advantage of the unique properties of quantum states, such as superposition and entanglement, to enhance the sensitivity of measurements. This allows for the detection of very small changes in variables like magnetic fields, temperature, and time. Applications of quantum sensing include medical imaging, navigation systems, and geophysical exploration. By utilizing quantum sensors, scientists and engineers can achieve better accuracy and resolution than traditional sensors, leading to advancements in various fields, including environmental monitoring and fundamental physics research.