Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 42: Ultracold Plasmas and Rydberg Systems III (with Q)

A 42.6: Vortrag

Freitag, 27. März 2015, 12:15–12:30, P/H2

Towards deterministic single-photon source via four-wave mixing in a thermal microcell — •Yi-Hsin Chen, Fabian Ripka, Robert Löw, and Tilman Pfau — 5. Physikalisches Institut, Universität Stuttgart, Germany

Single-photon sources are the keys for photonic-based quantum security communication and information processing. One promising candidate to realize the deterministic single-photon source is based on the combination of four-wave-mixing (FWM) and Rydberg blockade effect. We propose that a single-photon source can be generated in a thermal vapor confined in a cell with micrometer scale, which is so-called microcell [1]. Similar to the studies of coherent Rydberg dynamics on nanosecond timescales [2] and van-der Waals interatomic interaction [3] in three-level system, we implement a pulsed FWM scheme to observe both coherent dynamics and effects of dephasing due to Rydberg-Rydberg interaction [4]. Furthermore, we investigate the effects of the excitation volume by reducing the volume to below the Rydberg interaction range (few micrometers). We discuss prospects for the generation of non-classical light.

[1] M. M. Müller et al., PRA 87, 053412 (2013)

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

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

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