Exploitation of transverse spatial modes in spontaneous four wave mixing photon-pair sources

Hector  Cruz-Ramirez; Roberto Ramirez-Alarcon; Daniel Cruz-Delgado; Jorge Monroy-Ruz; Erasto Ortiz-Ricardo; Francisco Dominguez-Serna; Karina Garay-Palmett; Alfred B. U'Ren

doi:10.1117/12.2238544

13 September 2016 Exploitation of transverse spatial modes in spontaneous four wave mixing photon-pair sources

Hector Cruz-Ramirez, Roberto Ramirez-Alarcon, Daniel Cruz-Delgado, Jorge Monroy-Ruz, Erasto Ortiz-Ricardo, Francisco Dominguez-Serna, Karina Garay-Palmett, Alfred B. U'Ren

Author Affiliations +

Proceedings Volume 9980, Quantum Communications and Quantum Imaging XIV; 99800I (2016) https://doi.org/10.1117/12.2238544
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

We present a source for which multiple spontaneous four-wave mixing (SFWM) processes are supported in a few mode birefringent fiber, each process associated with a particular combination of transverse modes for the four participating waves. Within the weakly guiding regime, for which the propagation modes may be well approximated by linearly polarized (LP) modes, the departure from circular symmetry due to the fiber birefringence translates into orbital angular momentum (OAM) and parity conservation rules, i.e. reflecting elements from both azimuthal and rectangular symmetries. In our source: i) each process is group-velocity-matched so that it is, by design, nearly-factorable, and ii) the spectral separation between neighboring processes is greater than the marginal spectral width of each process. Consequently, there is a direct correspondence between the joint amplitude of each process and each of the Schmidt mode pairs of the overall two-photon state. The present paper covers work presented in Refs.¹ and.²

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Hector Cruz-Ramirez, Roberto Ramirez-Alarcon, Daniel Cruz-Delgado, Jorge Monroy-Ruz, Erasto Ortiz-Ricardo, Francisco Dominguez-Serna, Karina Garay-Palmett, and Alfred B. U'Ren "Exploitation of transverse spatial modes in spontaneous four wave mixing photon-pair sources", Proc. SPIE 9980, Quantum Communications and Quantum Imaging XIV, 99800I (13 September 2016); https://doi.org/10.1117/12.2238544

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KEYWORDS

Signal processing

Signal detection

Birefringence

Wave propagation

Dispersion

Polarization

Four wave mixing

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