Twin-beam sub-shot-noise raster-scanning microscope

J. Sabines-Chesterking, A. R. McMillan, P. A. Moreau, S. K. Joshi, S. Knauer, E. Johnston, J. G. Rarity, J. C. F. Matthews

Research output: Contribution to journalArticle (Academic Journal)peer-review

28 Citations (Scopus)
189 Downloads (Pure)


By exploiting the quantised nature of light, we demonstrate a sub-shot-noise scanning optical transmittance microscope. Our microscope demonstrates, with micron scale resolution, a factor of improvement in precision of 1.76(9) in transmittance estimation gained per probe photon relative to the theoretical model, a shot-noise-limited source of light, in an equivalent single-pass classical version of the same experiment using the same number of photons detected with a 90% efficient detector. This would allow us to observe photosensitive samples with nearly twice the precision, without sacrificing image resolution or increasing optical power to improve signal-to-noise ratio. Our setup uses correlated twin-beams produced by parametric down-conversion, and a hybrid detection scheme comprising photon-counting-based feed-forward and a highly efficient CCD camera.
Original languageEnglish
Pages (from-to)30810-30818
Number of pages9
JournalOptics Express
Issue number21
Publication statusPublished - 10 Oct 2019

Structured keywords

  • Bristol Quantum Information Institute
  • QETLabs
  • Photonics and Quantum


Dive into the research topics of 'Twin-beam sub-shot-noise raster-scanning microscope'. Together they form a unique fingerprint.

Cite this