| Author(s): |
Jingyun Fan; M D. Eisaman; Alan L. Migdall; |
| Title: |
An Optical Fiber-Based Source of Polarization-Entangled Photon Pairs |
| Published: |
September 10, 2007 |
| Abstract: |
We describe an achromatic, phase-stable, broadband source of polarization-entangled photon pairs with high spectral brightness that uses four-wave mixing in a fiber Sagnac interferometer. We achieved a polarization-entangled two-photon coincidence rate of 7 kHz per 0.5 THz (0.9 nm) of bandwidth per 300 ?W of average pump power. At this rate, we observed two-photon fringe interference visibilities greater than 97%, over a 10 THz (? 24 nm) spectral range. We measured violations of Bell s inequality by more than 24 standard deviations for each of the four Bell states in less than 3 minutes per state. Our measurements demonstrate that this source possesses a high spectral brightness (7 kHz/300 ?W/0.9 nm), large tunable wavelength range (24 nm), single spatial mode, and phase stability, making it a promising candidate for a wide range of quantum-information applications. |
| Citation: |
Proceedings of SPIE |
| Volume: |
6780 |
| Pages: |
8 pp. |
| Keywords: |
accidental;Bell state;coincidence;four-wave mixing;Raman scattering;Sagnac interferometer |
| Research Areas: |
Quantum Optics, Single Photon Detectors, Quantum Devices, Single Photon Sources, Correlated Photon Radiometry, Quantum Information Technology |
| PDF version: |
 Click here to retrieve PDF version of paper (695KB) |
