Parametric oscillation in vertical triple microcavities

C. Diederichs, J. Tignon (), G. Dasbach, C. Ciuti, A. Lemaître, J. Bloch, Ph. Roussignol and C. Delalande
Additional contact information
C. Diederichs: Ecole Normale Supérieure
J. Tignon: Ecole Normale Supérieure
G. Dasbach: Ecole Normale Supérieure
C. Ciuti: Ecole Normale Supérieure
A. Lemaître: LPN/CNRS
J. Bloch: LPN/CNRS
Ph. Roussignol: Ecole Normale Supérieure
C. Delalande: Ecole Normale Supérieure

Nature, 2006, vol. 440, issue 7086, 904-907

Abstract: Abstract Optical parametric oscillation is a nonlinear process that enables coherent generation of ‘signal’ and ‘idler’ waves, shifted in frequency from the pump wave1,2. Efficient parametric conversion is the paradigm for the generation of twin or entangled photons for quantum optics applications such as quantum cryptography3,4, or for the generation of new frequencies in spectral domains not accessible by existing devices. Rapid development in the field of quantum information requires monolithic, alignment-free sources that enable efficient coupling into optical fibres and possibly electrical injection. During the past decade, much effort has been devoted to the development of integrated devices for quantum information5,6,7 and to the realization of all-semiconductor parametric oscillators8,9. Nevertheless, at present optical parametric oscillators typically rely on nonlinear crystals placed into complex external cavities, and pumped by powerful external lasers. Long interaction lengths are typically required and the phase mismatch between the parametric waves propagating at different velocities2 results in poor parametric conversion efficiencies. Here we report the demonstration of parametric oscillation in a monolithic semiconductor triple microcavity with signal, pump and idler waves propagating along the vertical direction of the nanostructure. Alternatively, signal and idler beams can also be collected at finite angles, allowing the generation of entangled photon pairs. The pump threshold intensity is low enough to envisage the realization of an all-semiconductor electrically pumped micro-parametric oscillator.

Date: 2006
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DOI: 10.1038/nature04602

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