Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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

Keywords

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

Authors

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.

Released

1. 12. 2019

ISBN

2045-2322

Periodical

Scientific Reports

Year of study

9

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

13728

Pages to

13728

Pages count

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"
}