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

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)30810-30818
Number of pages9
JournalOptics Express
Volume27
Issue number21
DOIs
DateAccepted/In press - 11 Sep 2019
DatePublished (current) - 10 Oct 2019

Abstract

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.

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via Optical Society of America at https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-21-30810 . Please refer to any applicable terms of use of the publisher.

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