Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 45: Ultracold Plasmas, Rydberg Systems and Molecules

Q 45.6: Talk

Thursday, March 9, 2017, 12:30–12:45, P 104

Pulsed Rydberg four-wave mixing in a microcell — •Fabian Ripka, 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 combination of two effects in atomic ensembles, namely four-wave mixing (FWM) and 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 coherent 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.

We report on the latest results of Rydberg four-wave mixing in a volume size comparable to the Rydberg interaction range. This scheme promises to enable the creation of non-classical light states.

[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)