Frequency multiplexing for quasi-deterministic heralded single-photon sources.

ABSTRACT: Parametric single-photon sources are well suited for large-scale quantum networks due to their potential for photonic integration. Active multiplexing of photons can overcome the intrinsically probabilistic nature of these sources, resulting in near-deterministic operation. However, previous implementations using spatial and temporal multiplexing scale unfavorably due to rapidly increasing switching losses. Here, we break this limitation via frequency multiplexing in which switching losses remain fixed irrespective of the number of multiplexed modes. We use low-noise optical frequency conversion for efficient frequency switching and demonstrate multiplexing of three modes. We achieve a generation rate of 4.6 × 10⁴ photons per second with an ultra-low g⁽²⁾(0) = 0.07 in

SUBMITTER: Joshi C 

PROVIDER: S-EPMC5829139 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature