Squeezed-light-enhanced polarization interferometer
Abstract
Enhancement of the sensitivity of a polarization interferometer beyond the limit set by vacuum fluctuations of the electromagnetic field has been obtained with use of squeezed light generated by a KTiOPO4 optical parametric amplifier. The increase in signal-to-noise ratio relative to the shot-noise limit is 2 dB. The corresponding improvement in the response time of the interferometer is measured to be a factor of 1.6.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 1987
- DOI:
- 10.1103/PhysRevLett.59.2153
- Bibcode:
- 1987PhRvL..59.2153G
- Keywords:
-
- Electromagnetic Radiation;
- Interferometers;
- Light Amplifiers;
- Light Sources;
- Signal To Noise Ratios;
- Squeezed States (Quantum Theory);
- Gravitational Wave Antennas;
- Laser Gyroscopes;
- Numerical Analysis;
- Phase Shift;
- Polarization;
- Optics;
- 42.50.-p;
- 06.30.-k;
- 07.60.Ly;
- Quantum optics;
- Measurements common to several branches of physics and astronomy;
- Interferometers