Methods and apparatus of entangled photon generation using four-wave mixing
US9268195B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2013 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Feb 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A non-linear optical device is provided. The device comprises an optical disk or ring microresonator fabricated from a material that exhibits an optical nonlinearity able to produce degenerate four-wave mixing (FWM) in response to a pump beam having a pump frequency in a specified effective range. The microresonator is conformed to exhibit an angular group velocity minimum at a pump frequency within the specified effective range such that there is zero angular group velocity dispersion at the pump frequency. We refer to such a pump frequency as the “zero dispersion frequency”. In embodiments, excitation of the resonator by a pump beam of sufficient intensity at the zero-dispersion frequency causes the resonator to emit a frequency comb of entangled photon pairs wherein the respective frequencies in each pair are symmetrically placed about the zero-dispersion frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.