Spectrally engineered broadband photon source for two-photon quantum interferometry.
We present a new approach to engineering broadband sources of entangled photon pairs for quantum interferometry. The source is based on quasi-phase-matched spontaneous parametric down conversion in a titanium diffused periodically poled lithium niobate waveguide with a strongly-chirped poling period. The proposed non-standard asymmetric poling mitigates phase distortions associated with the process of chirping. Asymmetric poling significantly broadens the entangled source bandwidth while preserving high visibility quantum interferometric sensing.
Abu
A
Thomas
Mackenzie
M
Van Camp
Olga
O
Minaeva
David
D
Simon
Alexander V
AV
Sergienko