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Single-photon stored-light Ramsey interferometry using Rydberg polaritons

Jiao, Yuechun; Spong, Nicholas L.R.; Hughes, Oliver D.W.; So, Chloe; Ilieva, Teodora; Weatherill, Kevin J.; Adams, Charles S.

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Yuechun Jiao

Nicholas L.R. Spong

Oliver D.W. Hughes

Chloe So

Teodora Ilieva

Charles S. Adams


We demonstrate a single-photon stored-light interferometer, where a photon is stored in a laser-cooled atomic ensemble in the form of a Rydberg polariton with a spatial extent of 10×1×1µm3. The photon is subject to a Ramsey sequence, i.e., “split” into a superposition of two paths. After a delay of up to 450 ns, the two paths are recombined to give an output dependent on their relative phase. The superposition time of 450 ns is equivalent to a free-space propagation distance of 135 m. We show that the interferometer fringes are sensitive to external fields and suggest that stored-light interferometry could be useful for localized sensing applications.


Jiao, Y., Spong, N. L., Hughes, O. D., So, C., Ilieva, T., Weatherill, K. J., & Adams, C. S. (2020). Single-photon stored-light Ramsey interferometry using Rydberg polaritons. Optics Letters, 45(20), 5888-5891.

Journal Article Type Article
Acceptance Date Sep 18, 2020
Online Publication Date Oct 15, 2020
Publication Date 2020-10
Deposit Date Oct 15, 2020
Publicly Available Date Oct 29, 2020
Journal Optics Letters
Print ISSN 0146-9592
Electronic ISSN 1539-4794
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 45
Issue 20
Pages 5888-5891
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Copyright Statement
Published by The Optical Society under the terms of the Creative<br /> Commons Attribution 4.0 License. Further distribution of this work<br /> must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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