Observation of a Microscopic Cascaded Contribution to the Fifth-Order Nonlinear Susceptibility

Ksenia Dolgaleva, Heedeuk Shin, and Robert W. Boyd
Phys. Rev. Lett. 103, 113902 – Published 9 September 2009

Abstract

Typically, low-order nonlinearities are much stronger than high-order nonlinearities. In this Letter, we demonstrate a procedure by which strong high-order nonlinearities can be synthesized out of low-order nonlinearities. Our procedure involves the use of the previously largely overlooked process of microscopic cascading, which results from local-field effects. We have performed an experiment that allows us to distinguish the influence of microscopic cascading from the more-well-known process of macroscopic cascading, and we find conditions under which microscopic cascading can be the dominant effect. The ability to create a large high-order nonlinear response could prove useful for applications in quantum-information science that require the detection of the simultaneous presence of N entangled photons.

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  • Received 3 May 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.113902

©2009 American Physical Society

Authors & Affiliations

Ksenia Dolgaleva*, Heedeuk Shin, and Robert W. Boyd

  • The Institute of Optics, University of Rochester, Rochester, New York 14627, USA

  • *ksenia.dolgaleva@utoronto.ca; Present address: Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, ON M5S 3G4, Canada.

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Vol. 103, Iss. 11 — 11 September 2009

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