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arXiv · 1911.00056

Narrowband photon pairs with independent frequency tuning for quantum light-matter interactions

Vindhiya Prakash·Lorena C. Bianchet·Marc T. Cuairan·Pau Gomez·Natalia Bruno·Morgan W. Mitchell
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Abstract

We describe a cavity-enhanced spontaneous parametric down-conversion (CE-SPDC) source for narrowband photon pairs with filters such that over 97% of the correlated photons are in a single mode of 4.3(4) MHz bandwidth. Type-II phase matching, a tuneable-birefringence resonator, MHz-resolution pump tuning, and tuneable Fabry-Perot filters are used to achieve independent signal and idler tuning. We map the CE-SPDC spectrum using difference frequency generation to precisely locate the emission clusters, and demonstrate CE-SPDC driven atomic spectroscopy. The generated photon pairs efficiently interact with neutral rubidium, a well-developed system for quantum networking and quantum simulation. The techniques are readily extensible to other material systems.

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Vindhiya Prakash, Lorena C. Bianchet, Marc T. Cuairan, Pau Gomez, Natalia Bruno, Morgan W. Mitchell. 2019-10-31. Narrowband photon pairs with independent frequency tuning for quantum light-matter interactions. https://doi.org/10.1364/oe.382474

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