Low-noise optomechanical single phonon-photon conversion for quantum networks.

ABSTRACT: Nano-structured optomechanical crystals (OMC) form an interface between mechanical modes with long coherence times and telecom optical photons, ideal for long-distance distribution of quantum information. However, the implementation of scalable quantum networks based on OMCs has been inhibited by thermal mechanical noise. Here, we overcome this limitation using a quasi-two-dimensional OMC and generate single photons via single phonon-photon conversion. In this work, we verify the low thermal noise and high purity of the generated single photons through a Hanbury Brown-Twiss experiment with g(2)(0)=0.35-0.08+0.10 . We perform Hong-Ou-Mandel interference of the emitted photons showcasing the indistinguishability and coherence with visibility V = 0.52 ± 0.15 after 1.43 km fiber delay. Lastly,

SUBMITTER: Chen L 

PROVIDER: S-EPMC12859002 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature