Controllable quantum states through cascaded parametric processes in superlattices

D. A. Antonosyan; T. V. Gevorgyan; G. Yu. Kryuchkyan

doi:10.1117/12.891132

4 March 2011 Controllable quantum states through cascaded parametric processes in superlattices

D. A. Antonosyan, T. V. Gevorgyan, G. Yu. Kryuchkyan

Proceedings Volume 7998, International Conference on Laser Physics 2010; 799816 (2011) https://doi.org/10.1117/12.891132
Event: International Conference on Laser Physics 2010, 2010, Ashtarak, Armenia

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↔ω₁+ω₂ , ω₂↔ω₁+ω₁ , 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↔ω₂ +ω₂ , ω₂↔ω₁+ω₁ 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.

Citation Download 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 (4 March 2011); https://doi.org/10.1117/12.891132

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