Single-photon-compatible telecommunications-band quantum memory in a hot atomic gas
File(s)
Published version
Author(s)
Thomas, SE
Sagona-Stophel, S
Schofield, Z
Walmsley, IA
Ledingham, PM
Type
Journal Article
Abstract
The efficient storage and on-demand retrieval of quantum optical states that are compatible with the telecommunications band is a requirement for future terrestrial-based quantum optical networking. Spectrum in the telecommunications band minimizes optical fiber-propagation losses, and broad optical bandwidth facilitates high-speed networking protocols. Here we report on a telecommunications-wavelength- and bandwidth-compatible quantum memory. Using the Off-Resonant Cascaded Absorption protocol in hot
87
Rb
vapor, we demonstrate a total internal memory efficiency of
20.90
(
1
)
%
with a Doppler-limited storage time of
1.10
(
2
)
ns. We characterize the memory performance with weak coherent states and measure a signal-to-noise ratio of
1.9
(
1
)
×
10
4
for an average input photon number of 0.084.
87
Rb
vapor, we demonstrate a total internal memory efficiency of
20.90
(
1
)
%
with a Doppler-limited storage time of
1.10
(
2
)
ns. We characterize the memory performance with weak coherent states and measure a signal-to-noise ratio of
1.9
(
1
)
×
10
4
for an average input photon number of 0.084.
Date Issued
2023-03
Date Acceptance
2023-02-15
Citation
Physical Review Applied, 2023, 19 (3), pp.1-6
ISSN
2331-7019
Publisher
American Physical Society
Start Page
1
End Page
6
Journal / Book Title
Physical Review Applied
Volume
19
Issue
3
Copyright Statement
© 2023 American Physical Society
Identifier
http://dx.doi.org/10.1103/physrevapplied.19.l031005
Publication Status
Published
Article Number
L031005
Date Publish Online
2023-03-16