24-27 November 2022
Karlsruhe Institute of Technology
Europe/Berlin timezone

Using Four-Wave Mixing in Thermal Vapours as a single photon source

26 Nov 2022, 16:00
Foyer (KIT Campus South)


KIT Campus South

KIT Campus map: https://www.kit.edu/campusplan/ Building: 30.22 Room: Foyer im 1. und 2. OG Address: Institute of Technology, Engesserstraße 7, 76131 Karlsruhe Coordinates: 49.01244, 8.41062
Poster Physics Posters Poster session


Clare Higgins (Durham University)


Single photon sources are highly sought after because photons are excellent quantum information carriers, and are important for quantum communication and fundamental quantum optics. We use a ladder energy level system on the 5S$_{1/2}$-5P$_{3/2}$-5D$_{3/2}$ states of thermal $^{87}$Rb vapour to produce a heralded single photon source with a heralded auto-correlation value of $g^2(\tau = 0) = 0.22\pm 0.2$ which is non-classical. We also place the vapour in a 0.6 Tesla magnetic field to implement this scheme in the hyperfine Paschen-Back regime, where the transitions are separated by more that their linewidth, which allows for a cleaner system.

Category Other

Primary author

Clare Higgins (Durham University)


Prof. Ifan Hughes (Durham University) Dr. Danielle Pizzey (Durham University)

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