Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source

Schunk G, Vogl U, Strekalov DV, Förtsch M, Sedlmeir F, Schwefel H, Göbelt M, Christiansen S, Leuchs G, Marquardt C (2015)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Publisher: OSA - The Optical Society

Book Volume: 2

Pages Range: 773-778

Journal Issue: 9

DOI: 10.1364/OPTICA.2.000773

Abstract

Quantum information technology strongly relies on the coupling of optical photons with narrowband quantum systems, such as quantum dots, color centers, and atomic systems. This coupling requires matching the optical wavelength and bandwidth to the desired system, which presents a considerable problem for most available sources of quantum light. Here we demonstrate the coupling of alkali dipole transitions with a tunable source of photon pairs. Our source is based on spontaneous parametric downconversion in a triply resonant whispering gallery mode resonator. For this, we have developed novel wavelength-tuning mechanisms that allow a coarse tuning to either the cesium or rubidium wavelength, with subsequent continuous fine-tuning to the desired transition. As a demonstration of the functionality of the source, we performed a heralded single-photon measurement of the atomic decay. We present a major advance in controlling the spontaneous downconversion process, which makes our bright source of heralded single photons now compatible with a plethora of narrowband resonant systems.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

How to cite

APA:

Schunk, G., Vogl, U., Strekalov, D.V., Förtsch, M., Sedlmeir, F., Schwefel, H.,... Marquardt, C. (2015). Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source. Optica, 2(9), 773-778. https://doi.org/10.1364/OPTICA.2.000773

MLA:

Schunk, Gerhard, et al. "Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source." Optica 2.9 (2015): 773-778.

BibTeX: Download