Spectroscopy with squeezed light
Abstract
A frequency-tunable source of squeezed light is employed for spectroscopic measurements of atomic cesium. Relative to the usual quantum limit associated with vacuum-state fluctuations, enhanced sensitivity is demonstrated for the detection of Doppler-free resonances in saturation spectroscopy, with an improvement of 3.1 dB directly observed and 3.8 dB inferred after correcting for detector thermal noise.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1992
- DOI:
- 10.1103/PhysRevLett.68.3020
- Bibcode:
- 1992PhRvL..68.3020P
- Keywords:
-
- Cesium;
- Photoelectric Emission;
- Spectral Energy Distribution;
- Squeezed States (Quantum Theory);
- Nonlinear Optics;
- Sapphire;
- Solid State Lasers;
- Optics;
- 42.62.Fi;
- 32.80.-t;
- 42.50.Dv;
- Laser spectroscopy;
- Photon interactions with atoms;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements