Slow light in flight imaging

Kali Wilson, Bethany Little, Genevieve Gariepy, Robert Henderson, John Howell, Daniele Faccio

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Slow-light media are of interest in the context of quantum computing and enhanced measurement of quantum effects, with particular emphasis on using slow light with single photons. We use light-in-flight imaging with a single-photon avalanche diode camera array to image in situ pulse propagation through a slow-light medium consisting of heated rubidium vapor. Light-in-flight imaging of slow-light propagation enables direct visualization of a series of physical effects, including simultaneous observation of spatial pulse compression and temporal pulse dispersion. Additionally, the single-photon nature of the camera allows for observation of the group velocity of single photons with measured single-photon fractional delays greater than 1 over 1 cm of propagation.

Original languageAmerican English
Article number023830
JournalPhysical Review A
Issue number2
StatePublished - 15 Feb 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 American Physical Society.


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