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Proceedings Paper

Controllable quantum states through cascaded parametric processes in superlattices
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Paper 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.

Paper Details

Date Published: 5 March 2011
PDF: 9 pages
Proc. SPIE 7998, International Conference on Laser Physics 2010, 799816 (5 March 2011); doi: 10.1117/12.891132
Show Author Affiliations
D. A. Antonosyan, Yerevan State Univ. (Armenia)
Institute for Physical Research (Armenia)
T. V. Gevorgyan, Institute for Physical Research (Armenia)
G. Yu. Kryuchkyan, Yerevan State Univ. (Armenia)
Institute for Physical Research (Armenia)


Published in SPIE Proceedings Vol. 7998:
International Conference on Laser Physics 2010

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