English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The statistical properties of a radiation sources are commonly characterizedby second-order-correlation or Mandel parameter. Our research found that thesingle photons modulation spectrum provides us another optional way which ismore sensitive to the high frequency information contained in the photonsequence. In this paper, we present direct laser communication by using amulti-channel frequency coding scheme based on the single photons modulationspectrum in which the multi-frequency modulation makes the transmissioncapacity efficiently enhanced. The modulation frequencies could be operated ina wide band without frequency aliasing due to the inherent randomness ofphotons arrival time of weak coherent light. The error rate less than 10-5 hasbeen achieved experimentally when the mean signal photon count is 80 kcps. Themodulated coherent light field shows nonlinear effects of single photonsmodulation spectrum. The studies of statistical properties of the singlephotons modulation spectrum, including the dependence of mean noise photoncount, integration time, channel spacing and the number of frequency component,helped us to optimize the error rate and transmission capacity.

Enhanced transmission capacity for laser communication at the single-photon level using the multi-channel frequency coding scheme