Interaction of Fixed Number of Photons with Retinal Rod Cells

Interaction of Fixed Number of Photons with Retinal Rod Cells
Title:
Interaction of Fixed Number of Photons with Retinal Rod Cells
Other Titles:
PHYSICAL REVIEW LETTERS
Keywords:
Publication Date:
29 May 2014
Citation:
Phys. Rev. Lett. 112, 213601 (2014)
Abstract:
New tools and approaches of quantum optics offer a unique opportunity to generate light pulses carrying a precise number of photons. Accurate control over the light pulses helps to improve the characterization of photoinduced processes. Here, we study interaction of a specialized light source which provides flashes containing just one photon, with retinal rod cells of Xenopus laevis toads. We provide unambiguous proof of the single-photon sensitivity of rod cells without relying on the statistical modeling. We determine their quantum efficiencies without the use of any precalibrated detectors and obtain the value of ð29 4.7Þ%. Our approach provides the path for future studies and applications of quantum properties of light in phototransduction, vision, and photosynthesis.
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PublisherCopyrights
Funding Info:
Description:
ISSN:
0031-9007
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