A wavelength-tunable fiber-coupled source of narrowband entangled photons

Details A wavelength-tunable fiber-coupled source of narrowband entangled photons A wavelength-tunable fiber-coupled source of narrowband entangled photons

2007-06-19

arxiv.org/abs/0706.2877v2

Opt. Express 15, 15377-15386 (2007)

Physics

Quantum Physics

10 pages, 5 figures. Article rewritten, added Fig.(1a-1b). Published in Optics Express, comments welcome

Scientific paper

10.1364/OE.15.015377

We demonstrate a wavelength-tunable, fiber-coupled source of polarization-entangled photons with extremely high spectral brightness and quality of entanglement. Using a 25 mm PPKTP crystal inside a polarization Sagnac interferometer we detect a spectral brightness of 273000 pairs/(s mW nm), a factor of 28 better than comparable previous sources while state tomography showed the two-photon state to have a tangle of T=0.987. This improvement was achieved by use of a long crystal, careful selection of focusing parameters and single-mode fiber coupling. We demonstrate that, due to the particular geometry of the setup, the signal and idler wavelengths can be tuned over a wide range without loss of entanglement.

Affiliated with

Also associated with

No associations

Rating

A wavelength-tunable fiber-coupled source of narrowband entangled photons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A wavelength-tunable fiber-coupled source of narrowband entangled photons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A wavelength-tunable fiber-coupled source of narrowband entangled photons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-33878