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Proceedings Article

Controllable quantum states through cascaded parametric processes in superlattices

[+] Author Affiliations
D. A. Antonosyan, G. Yu. Kryuchkyan

Yerevan State Univ. (Armenia) and Institute for Physical Research (Armenia)

T. V. Gevorgyan

Institute for Physical Research (Armenia)

Proc. SPIE 7998, International Conference on Laser Physics 2010, 799816 (March 04, 2011); doi:10.1117/12.891132
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From Conference Volume 7998

  • International Conference on Laser Physics 2010
  • Aram V. Papoyan
  • Ashtarak, Armenia | October 12, 2010

abstract

We investigate production of three-photon and four-photon states in cascaded parametric processes of photon splitting and summing in χ (2)nonlinear media, under action of pump field. Generation of photon triplets using simultaneously phase matched three-photon processes: ω0↔ω12 , ω2↔ω11 , is considered in dual-grating layered structure that involves nonlinear and linear segments. The production of heralded two-photon entangled states from three-photon states is analyzed for this configuration by using the method of conditional detection of auxiliary photons. Cascaded four-photon downconversion based on simultaneously phase matched three-photon processes: ω0↔ω22 , ω2↔ω11 is arranged for phase-reversed configuration. The effects of correlation between photons in both three-photon and four-photon states is analyzed in the regimes of amplification of corresponding modes at the frequency of three-photon downconversion ω1 = ω0/3 and the frequency of four-photon down-conversion ω1 = ω0/4respectively for both cascaded systems.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

D. A. Antonosyan ; T. V. Gevorgyan and G. Yu. Kryuchkyan
"Controllable quantum states through cascaded parametric processes in superlattices", Proc. SPIE 7998, International Conference on Laser Physics 2010, 799816 (March 04, 2011); doi:10.1117/12.891132; http://dx.doi.org/10.1117/12.891132


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