An efficient, tunable, and robust source of narrow-band photon pairs at the 87Rb D1 line

Mottola R, Buser G, Mueller C, Kroh T, Ahlrichs A, Ramelow S, Benson O, Treutlein P, Wolters J (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Optics Express Optical Society of America

Book Volume: 28

Pages Range: 3159-3170

Journal Issue: 3

DOI: 10.1364/OE.384081

Abstract

We present an efficient and robust source of photons at the 87Rb D1-line (795 nm) with a narrow bandwidth of δ = 226(1) MHz. The source is based on non-degenerate, cavity-enhanced spontaneous parametric down-conversion in a monolithic optical parametric oscillator far below threshold. The setup allows for efficient coupling to single mode fibers. A heralding efficiency of ηheralded = 45(5) % is achieved, and the uncorrected number of detected photon pairs is 3.8 × 103/(s mW). For pair generation rates up to 5 × 105/s, the source emits heralded single photons with a normalized, heralded, second-order correlation function g( c 2) <0.01. The source is intrinsically stable due to the monolithic configuration. Frequency drifts are on the order of δ/20 per hour without active feedback on the emission frequency. We achieved fine-tuning of the source frequency within a range of >2 GHz by applying mechanical strain.

Involved external institutions

Universität Basel CH Switzerland (CH) Humboldt-Universität zu Berlin DE Germany (DE)

How to cite

APA:

Mottola, R., Buser, G., Mueller, C., Kroh, T., Ahlrichs, A., Ramelow, S.,... Wolters, J. (2020). An efficient, tunable, and robust source of narrow-band photon pairs at the 87Rb D1 line. Optics Express, 28(3), 3159-3170. https://doi.org/10.1364/OE.384081

MLA:

Mottola, Roberto, et al. "An efficient, tunable, and robust source of narrow-band photon pairs at the 87Rb D1 line." Optics Express 28.3 (2020): 3159-3170.

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