Applied Physics Letters

Continuous-wave quasi-phase-matched waveguide correlated photon pair source on a III–V chip

Peyman Sarrafi, Eric Y. Zhu, Ksenia Dolgaleva, Barry M. Holmes, David C. Hutchings, James Stewart Aitchison, Li Qian

Published Dec 16, 2013• 35 citations

Abstract

We report on the demonstration of correlated photon pair generation in a quasi-phase-matched superlattice GaAs/AlGaAs waveguide using a continuous-wave pump. Our photon pair source has a low noise level and achieves a high coincidence-to-accidental ratio greater than 100, which is the highest value reported in III–V chips so far. This correlated photon pair source has the potential to be monolithically integrated with on-chip pump laser sources fabricated on the same superlattice wafer structure, enabling direct correlated/entangled photon pair production from a compact electrically powered chip.

DOI: 10.1063/1.4851095

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