State engineering of photon pairs produced through dual-pump spontaneous four-wave mixing.

We study theoretically the joint spectral properties of photon-pairs produced through spontaneous four-wave mixing (SFWM) with two spectrally distinct pump pulses in optical fibers. We show that, due to the group velocity difference between the pulses, the signature of the interaction can be significantly different from spontaneous parametric down-conversion or SFWM with a single pump pulse. Specifically, we study the case where temporal walk-off between the pumps enables a gradual turn-on and turn-off of the interaction. By utilizing this property, we develop a new approach towards tailoring the spectral correlations within the generated photon pairs, demonstrating the ability to produce factorable photon-pair states, and hence heralded single photons in a pure wave-packet. We show that the use of two pumps is advantageous over single-pump SFWM approaches towards this goal: the usage of the dual-pump configuration enables, in principle, the creation of completely factorable states without any spectral filtering, even in media for which single-pump SFWM tailoring techniques are unsatisfactory, such as standard polarization-maintaining fiber.

[1]  Christine Silberhorn,et al.  Generation of Pure-State Single-Photon Wavepackets by Conditional Preparation Based on Spontaneous Parametric Downconversion , 2006, quant-ph/0611019.

[2]  I. Walmsley,et al.  Toward Quantum-Information Processing with Photons , 2005, Science.

[3]  Brian J. Smith,et al.  Heralded generation of single photons in pure quantum states , 2012 .

[4]  Offir Cohen,et al.  Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber. , 2007, Optics express.

[5]  Design of bright, fiber-coupled and fully factorable photon pair sources , 2010 .

[6]  Jun Chen,et al.  Deterministic quantum splitter based on time-reversed Hong-Ou-Mandel interference , 2007 .

[7]  Jun Chen,et al.  All-fiber photon-pair source for quantum communications: Improved generation of correlated photons. , 2004 .

[8]  R. Stolen,et al.  Raman gain in glass optical waveguides , 1973 .

[9]  Kyo Inoue,et al.  1.5-microm band quantum-correlated photon pair generation in dispersion-shifted fiber: suppression of noise photons by cooling fiber. , 2005, Optics express.

[10]  A. Migdall,et al.  Generation of cross-polarized photon pairs in a microstructure fiber with frequency-conjugate laser pump pulses. , 2005, Optics express.

[11]  Christine Silberhorn,et al.  High-performance single-photon generation with commercial-grade optical fiber , 2010, 1012.1821.

[12]  Milja Medic,et al.  Fiber-based telecommunication-band source of degenerate entangled photons. , 2010, Optics letters.

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

[14]  Hong,et al.  Measurement of subpicosecond time intervals between two photons by interference. , 1987, Physical review letters.

[15]  Christine Silberhorn,et al.  Bridging visible and telecom wavelengths with a single-mode broadband photon pair source , 2009, 0908.2932.

[16]  P. Kumar,et al.  Observation of twin-beam-type quantum correlation in optical fiber. , 2001, Optics letters.

[17]  J G Rarity,et al.  Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources. , 2009, Optics express.

[18]  H. Takesue,et al.  Entangled Photon Pair Generation Using Silicon Wire Waveguides , 2012, IEEE Journal of Selected Topics in Quantum Electronics.

[19]  M. Lipson,et al.  Generation of correlated photons in nanoscale silicon waveguides. , 2006, Optics express.

[20]  Brian J. Smith,et al.  Photon pair generation in birefringent optical fibers. , 2009, Optics express.

[21]  Brian J. Smith,et al.  Tailored photon-pair generation in optical fibers. , 2008, Physical review letters.

[22]  Ekert,et al.  Practical quantum cryptography based on two-photon interferometry. , 1992, Physical review letters.

[23]  Rainer Leonhardt,et al.  Scalar modulation instability in the normal dispersion regime by use of a photonic crystal fiber. , 2003, Optics letters.

[24]  E. Knill,et al.  A scheme for efficient quantum computation with linear optics , 2001, Nature.

[25]  Andrew G. White,et al.  Engineered optical nonlinearity for quantum light sources. , 2010, Optics express.