Detail publikace

Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line

Kroh, T. Wolters, J. Ahlrichs, A. Schell, A.W. Thoma, A. Reitzenstein, S. Wildmann, J.S. Zallo, E., Trotta, R. Rastelli, A. Schmidt, O.G. Benson, O.

Originální název

Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Hybrid interfaces between distinct quantum systems play a major role in the implementation of quantum networks. Quantum states have to be stored in memories to synchronize the photon arrival times for entanglement swapping by projective measurements in quantum repeaters or for entanglement purification. Here, we analyze the distortion of a single-photon wave packet propagating through a dispersive and absorptive medium with high spectral resolution. Single photons are generated from a single In(Ga)As quantum dot with its excitonic transition precisely set relative to the Cesium D1 transition. The delay of spectral components of the single-photon wave packet with almost Fourier-limited width is investigated in detail with a 200 MHz narrow-band monolithic Fabry-Pérot resonator. Reflecting the excited state hyperfine structure of Cesium, “slow light” and “fast light” behavior is observed. As a step towards room-temperature alkali vapor memories, quantum dot photons are delayed for 5 ns by strong dispersion between the two 1.17 GHz hyperfine-split excited state transitions. Based on optical pumping on the hyperfine-split ground states, we propose a simple, all-optically controllable delay for synchronization of heralded narrow-band photons in a quantum network

Klíčová slova

ENTANGLED PHOTONS; LIGHT; INFORMATION; INTERFACE; REPEATERS; MEMORY; PAIRS

Autoři

Kroh, T.; Wolters, J.; Ahlrichs, A.; Schell, A.W.; Thoma, A.; Reitzenstein, S.; Wildmann, J.S.; Zallo, E.;, Trotta, R.; Rastelli, A.; Schmidt, O.G.; Benson, O.

Vydáno

1. 12. 2019

ISSN

2045-2322

Periodikum

Scientific Reports

Ročník

9

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

13728

Strany do

13728

Strany počet

11

URL

https://www.nature.com/articles/s41598-019-50062-x

BibTex

@article{BUT160600,
  author="Kroh, T. and Wolters, J. and Ahlrichs, A. and Schell, A.W. and Thoma, A. and Reitzenstein, S. and Wildmann, J.S. and Zallo, E. and , Trotta, R. and Rastelli, A. and Schmidt, O.G. and Benson, O.",
  title="Slow and fast single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line",
  journal="Scientific Reports",
  year="2019",
  volume="9",
  number="1",
  pages="13728--13728",
  doi="10.1038/s41598-019-50062-x",
  issn="2045-2322",
  url="https://www.nature.com/articles/s41598-019-50062-x"
}