Visible-to-telecom quantum frequency conversion of light from a single quantum emitter.
We demonstrate efficient (>30%) quantum frequency conversion of visible single photons (711 nm) emitted by a quantum dot to a telecom wavelength (1313 nm). Analysis of the first- and second-order coherence before and after wavelength conversion clearly proves that pivotal properties, such as the coherence time and photon antibunching, are fully conserved during the frequency translation process. Our findings underline the great potential of single photon sources on demand in combination with quantum frequency conversion as a promising technique that may pave the way for a number of new applications in quantum technology.
Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes, Campus E2.6, 66123 Saarbrücken, Germany.
Sebastian
S
Zaske
Andreas
A
Lenhard
Christian A
CA
Keßler
Jan
J
Kettler
Christian
C
Hepp
Carsten
C
Arend
Roland
R
Albrecht
Wolfgang-Michael
WM
Schulz
Michael
M
Jetter
Peter
P
Michler
Christoph
C
Becher