Squeezed States of Light for Future Gravitational Wave Detectors at a Wavelength of 1550 nm

Squeezed States of Light for Future Gravitational Wave Detectors at a Wavelength of 1550 nm The generation of strongly squeezed vacuum states of light is a key technology for future ground-based gravitational wave detectors (GWDs) to reach sensitivities beyond their quantum noise limit. For some proposed observatory designs, an operating laser wavelength of 1550 nm or around 2 μm is required to enable the use of cryogenically cooled silicon test masses for thermal noise reduction. Here, we pres...