Discover published sets by community

Quantum sensors exploit quantum correlations such as entanglement to achieve high precision measurements beyond classical limits. In telescopes, they can be used for more precise astrometric measurements and detecting faint objects by surpassing the shot-noise limit.

Squeezed light reduces quantum noise in one parameter at the expense of increasing it in another, which is allowed by the Heisenberg Uncertainty Principle. This has potential in telescopes to improve the sensitivity of instruments like interferometers, aiding in the detection of gravitational waves or faint celestial signals.

Quantum imaging techniques utilize quantum entanglement and superposition to create images with properties that classical imaging can't achieve. This could revolutionize telescope technology by allowing for incredibly detailed images at new wavelengths, especially in interferometry.

Quantum Key Distribution (QKD) ensures secure communication using principles of quantum mechanics. Its usage in telescopes is still nascent but could potentially be used to securely transmit data from space-based telescopes to Earth.

SPADs are a type of photodetector that can detect single photons with high timing accuracy. These are important in telescopes for observations requiring high time-resolution like time-domain astrophysics and in the detection of exoplanets.