Ultrabright long biphoton generation with non-linear optical material
US8970944B2 · kind B2 · utility
2Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Aug 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.