Quantum sensors are advanced devices that utilize the principles of quantum mechanics to measure physical quantities with exceptional precision. They can detect changes in magnetic fields, temperature, and time, often surpassing the capabilities of traditional sensors. This enhanced sensitivity is achieved by exploiting quantum phenomena such as superposition and entanglement. These sensors have a wide range of applications, including in fields like medical imaging, navigation, and geophysics. For instance, they can improve the accuracy of GPS systems or help in detecting underground resources. As technology advances, quantum sensors are expected to revolutionize various industries by providing more accurate data.