Optical Phase Conjugation with Less Than a Photon per Degree of Freedom

M. Jang, C. Yang, I.M. Vellekoop

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
55 Downloads (Pure)

Abstract

We demonstrate experimentally that optical phase conjugation can be used to focus light through strongly scattering media even when far less than a photon per optical degree of freedom is detected. We found that the best achievable intensity contrast is equal to the total number of detected photons, as long as the resolution of the system is high enough. Our results demonstrate that phase conjugation can be used even when the photon budget is extremely low, such as in high-speed focusing through dynamic media or imaging deep inside tissue.

Original languageEnglish
Article number093902
Number of pages5
JournalPhysical review letters
Volume118
Issue number9
DOIs
Publication statusPublished - 3 Mar 2017

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