Generation of multichannel color-entangled photon pairs via type-I spontaneous parametric downconversion

A method is presented for generating multiple-channel color-entangled photon pairs simultaneously based on type I quasi-phase-matched spontaneous parametric downconversion pumped in a single periodically poled lithium niobate (PPLN) crystal. It is predicted that one-, and two-channel color-entangled photon pairs can be simultaneously generated just by suitably choosing the PPLN grating period and the pump frequency. We point out that the full width at half maximum (FWHM) of idler and signal light are broadened dramatically due to spontaneous parametric downconversion in case of a pulsed pump.

[1]  H. Weinfurter,et al.  Experimental quantum teleportation , 1997, Nature.

[2]  Quantum computation through entangling single photons in multipath interferometers , 2000, Physical review letters.

[3]  Paul L Voss,et al.  Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band. , 2004, Physical review letters.

[4]  D. Jundt,et al.  Temperature-dependent Sellmeier equation for the index of refraction, n(e), in congruent lithium niobate. , 1997, Optics letters.

[5]  Christopher Edward Kuklewicz,et al.  Ultrabright source of polarization-entangled photons from cavity-enhanced downconversion , 2005 .

[6]  Charles H. Bennett,et al.  Communication via one- and two-particle operators on Einstein-Podolsky-Rosen states. , 1992, Physical review letters.

[7]  R. T. Smith,et al.  Thermal Expansion of Lithium Tantalate and Lithium Niobate Single Crystals , 1969 .

[8]  Jeffrey H. Shapiro,et al.  High-flux source of polarization-entangled photons from a periodically poled KTiOPO 4 parametric down-converter , 2003, quant-ph/0305092.

[9]  Ekert,et al.  Quantum cryptography based on Bell's theorem. , 1991, Physical review letters.

[10]  David E. Zelmon,et al.  Infrared corrected Sellmeier coefficients for congruently grown lithium niobate and 5 mol. magnesium oxide doped lithium niobate , 1997 .

[11]  Generation of polarization-entangled photon pairs in 1550nm band by a fiber-optic two-photon interferometer , 2004 .

[12]  M. Martinelli,et al.  Three-Color Entanglement , 2009, Science.