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Q: Fachverband Quantenoptik und Photonik

Q 45: Quantum Effects (QED) II

Q 45.7: Vortrag

Donnerstag, 12. März 2020, 12:30–12:45, f442

Tailoring a Single Photon with an Atomic Frequency Comb — •Tom Schmit, Luigi Giannelli, and Giovanna Morigi — Theoretische Physik, Universität des Saarlandes, 66123 Saarbrücken, Germany

Quantum memories are storage units for flying qubits such as single photons [1] and they are one of the key ingredients for building a quantum network [2]. Memories based on solid-state media, such as rare-ion doped crystals, are promising due to their coherence properties. Among the protocols that have been developed for solid-state memories is the Atomic Frequency Comb (AFC) protocol [3]. Here, a given absorption line of the medium is spectrally shaped such that it consists of a series of narrow peaks. In this work we theoretically explore the perspectives of an AFC to tailor the temporal and spectral shape of the photon that is retrieved from the memory. We determine the shape of the comb that is required for generating a target photon of arbitrary shape and discuss some specific examples.
 
[1] N. Sangouard and H. Zbinden, Jour. of Mod. Opt., 59:17, 1458-1464 (2012).
[2] H. J. Kimble, Nature 453, 1023 (2008).
[3] M. Afzelius, C. Simon, H. de Riedmatten, and N. Gisin, Phys. Rev. A, 79, 052329 (2009).