Erlangen 2018 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics V

Q 62.12: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Redoutensaal

Towards an efficient on-demand single-photon source based on atomic microcells — •Florian Christaller, Fabian Ripka, Hao Zhang, Annika Belz, Harald Kübler, Robert Löw, and Tilman Pfau — 5. Physikalisches Institut and IQST, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart

Photonic quantum devices based on atomic vapors at room temperature combine the advantages of atomic vapors being intrinsically reproducable as well as semiconductor-based concepts being scalable and integrable. One key device in the field of quantum information are on-demand single-photon sources. A promising candidate for realization relies on the Rydberg blockade effect.

Coherent dynamics to Rydberg states [1] and sufficient Rydberg interaction strengths [2] have already been demonstrated in thermal vapors. Also in a pulsed FWM scheme these phenomena could be observed [3,4]. Additionally, time-resolved probing of collective Rydberg excitation has been performed [5], revealing a lifetime long enough for effective Rydberg-Rydberg interactions.

Here we report on different multi-level schemes which exploit the latest developments in laser technology. We aim at high repetition rate and high fidelity of single-photon generation.

[1] Huber et al., PRL 107, 243001 (2011)

[2] Baluktsian et al., PRL 110, 123001 (2013)

[3] Huber et al., PRA 90, 053806 (2014)

[4] Chen et al., Appl. Phys. B, 122:18 (2016)

[5] Ripka et al., Phys. Rev. A, 053429 (2016)