Detection of the Ultranarrow Temporal Correlation of Twin Beams via Sum-Frequency Generation
Abstract
We demonstrate the ultranarrow temporal correlation (6 fs full width half maximum) of twin beams generated by parametric down-conversion by using its reverse process, i.e., sum-frequency generation. The result relies on an achromatic imaging of a huge bandwidth of twin beams and on a careful control of their spatial degrees of freedom. The detrimental effects of spatial filtering and imperfect imaging are shown, along with the theoretical model used to describe the results.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2012
- DOI:
- 10.1103/PhysRevLett.108.253904
- arXiv:
- arXiv:1203.3661
- Bibcode:
- 2012PhRvL.108y3904J
- Keywords:
-
- 42.65.Lm;
- 03.67.Bg;
- 42.50.Dv;
- 42.50.Ex;
- Parametric down conversion and production of entangled photons;
- Entanglement production and manipulation;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Optical implementations of quantum information processing and transfer;
- Quantum Physics;
- Physics - Optics
- E-Print:
- Phys. Rev. Lett. 108, 253904 (2012)