Interfacing the different building blocks of a future large-scale quantum network will require
efficient and noiseless frequency conversion of quantum light. Nitrogen-vacancy centers in …

We present an efficient and robust source of photons at the^ 87Rb D1-line (795 nm) with a
narrow bandwidth of δ= 226 (1) MHz. The source is based on non-degenerate, cavity …

Cryogenic operation, in conjunction with new test–mass materials, promises to reduce the
sensitivity limitations from thermal noise in gravitational-wave detectors. Currently, the most …

We demonstrate a nonlinear optical resonator that tunes itself onto resonance with an input
beam. In a monolithic Fabry–Perot cavity implemented in rubidium-doped periodically poled …

During the past years, squeezed states of light have become a versatile tool in quantum
optics with various applications. These applications include gravitational-wave detection …

We demonstrate vacuum squeezing at the D_1 line of atomic rubidium (795 nm) with a
tunable, doubly-resonant, monolithic subthreshold optical parametric oscillator in …

Thermal noise of the dielectric mirror coatings can limit laser-optical high-precision
measurements. Coatings made of amorphous silicon and silicon nitride could provide a …

Die verlässliche Erzeugung einzelner Photonen mit wohldefinierten Eigenschaften in allen
Freiheitsgraden ist entscheidend für die Entwicklung photonischer Quantentechnologien …

We report on the waveguide-based generation of pulsed squeezed light at 795 nm, suitable
for quantum enhanced measurements with rubidium atoms. Pulsed ultraviolet second …

Integrated, monolithic nonlinear cavities are of great interest in both classical and quantum
optics experiments due to their high efficiency and stability. However, a general analytic …