Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides

Krishna Thyagarajan; Ritwick Das; Olivier Alibart; Marc de Micheli; Daniel B Ostrowsky; Sébastien Tanzilli

doi:10.1364/oe.16.003577

Increased pump acceptance bandwidth in spontaneous parametric downconversion process using Bragg reflection waveguides

Opt Express. 2008 Mar 17;16(6):3577-82. doi: 10.1364/oe.16.003577.

Authors

Krishna Thyagarajan¹, Ritwick Das, Olivier Alibart, Marc de Micheli, Daniel B Ostrowsky, Sébastien Tanzilli

Affiliation

¹ Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India. ktrajan@physics.iitd.ac.in

PMID: 18542450
DOI: 10.1364/oe.16.003577

Abstract

In this paper we show that by suitably tailoring the dispersion characteristics of a Bragg reflection waveguide (BRW) mode, it is possible to achieve efficient photon pair generation over a large pump bandwidth while maintaining narrow signal bandwidth. The structure proposed consists of a high index core BRW with a periodically poled GaN core and periodically stratified cladding made up of alternate layers of Al(0.02)Ga(0.98)N and Al(0.45)Ga(0.55)N. Such photon-pair generators should find applications in realizing compact and stable sources for quantum information processing.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Amplifiers, Electronic*
Computer Simulation
Computer-Aided Design*
Equipment Design
Equipment Failure Analysis
Lasers*
Models, Theoretical*
Optics and Photonics / instrumentation*
Oscillometry / instrumentation*
Refractometry / instrumentation*