Quantum frequency conversion of single photons from a nitrogen-vacancy center in diamond to telecommunication wavelengths
El Mahdaoui, A.
We report on the conversion to telecommunication wavelengths of single photons emitted by nitrogen-vacancy (NV) defect in diamond. By means of different frequency generation, we convert spin-selective photon at 637 nm, associated with the coherent NV zero-photon line, to the target wavelength of 1588 nm in the L-telecommunication band. The succesful conversion is evidenced by time-resolved detection revealing a telecommunication-photon lifetime identical to that of the original 637-nm photon. Furthermore, we show by second-order correlation measurements that the single-photon statistics are preserved. The overall efficiency of this one-step conversion reaches 17% in our current setup, along with a signal-to-noise ration of approximately 7 despite the low probability (<10-3) of an incident 637-nm photon. This result shows the potential for efficient telecommunication-photon-NV-center interfaces and marks an important step towards future long-range entanglement-based quantum networks.
High Tech Systems & Materials
To reference this document use:
Optical quantum information processing
American Physical Society APS, Ridge, NY, US
Physical review applied, 9
De naam van de tweede auteur is foutief gespeld en moet A. Tchebotareva zijn