What are the fundamental principles of quantum mechanics that underlie quantum sensing?

The field of quantum sensing relies on fundamental principles of quantum mechanics to achieve precision and sensitivity that surpasses classical sensing methods. Several key quantum principles underlie quantum sensing: 1. Superposition: One of the fundamental principles of quantum mechanics is superposition. It states that quantum systems can exist in multiple states simultaneously. In the context of quantum sensing, this means that quantum sensors can be in a combination of different states at once, enabling them to measure multiple parameters simultaneously. This property allows for more comprehensive and efficient sensing. 2. Entanglement: Quantum entanglement is another essential quantum principle. When two or more quantum particles are entangled, the state of one particle is instantly correlated with the state of another, regardless of the distance between them. In quantum sensing, entanglement can be harnessed to create highly correlated sensor states, leading to improved precision and sensitivity in measurement....