Quadrature entanglement and photon-number correlations accompanied by phase-locking
Abstract
We investigate quantum properties of phase-locked light beams generated in a nondegenerate optical parametric oscillator (NOPO) with an intracavity waveplate. This investigation continues our previous analysis presented in Phys. Rev. A 69, 053814 (2004), and involves problems of continuous-variable quadrature entanglement in the spectral domain, photon-number correlations as well as the signatures of phase-locking in the Wigner function. We study the role of phase-localizing processes on the quantum correlation effects. The peculiarities of phase-locked NOPO in the self-pulsing instability operational regime are also cleared up. The results are obtained in the P -representation as a quantum-mechanical calculation in the framework of stochastic equations of motion, as well as by numerical simulation based on the method of quantum state diffusion.
- Publication:
-
Physical Review A
- Pub Date:
- March 2006
- DOI:
- 10.1103/PhysRevA.73.033810
- arXiv:
- arXiv:quant-ph/0512237
- Bibcode:
- 2006PhRvA..73c3810A
- Keywords:
-
- 42.50.Dv;
- 03.67.Mn;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Entanglement production characterization and manipulation;
- Quantum Physics
- E-Print:
- Subm. to PRA