In physics, *squeezed light* is the term for light that is in a special quantum state. In squeezed light, the uncertainty in a property of the light (such as the amplitude or phase) is reduced, below the limit set by the [[Heisenberg Uncertainty Principle|Heisenberg uncertainty principle]] for [[Coherent Light|coherent light]]. This effect can improve precision measurements, which is advantageous for applications in [[Quantum Communication|quantum communication]] and in the development of highly sensitive measuring instruments, see [[Quantum Metrology]]. Squeezed light is used, for example, in [[Gravitational Wave|gravitational wave]] detectors, where it helps to amplify signals beyond the usual noise level. >[!read]- Further Reading >- [[Quantum Optics]] >[!ref]- References