Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer
We demonstrate number-resolved detection of individual strontium atoms in a long working distance low numerical aperture (NA = 0.26) tweezer. Using a camera based on single-photon counting technology, we determine the presence of an atom in the tweezer with a fidelity of 0.989(6) (and loss of 0.1...
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doaj-a08661e33b0b4bf19fdd5b31e2b11dc52021-04-19T11:29:15ZengSciPostSciPost Physics2542-46532020-03-018303810.21468/SciPostPhys.8.3.038Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezerNiamh Christina Jackson, Ryan Keith Hanley, Matthew Hill, Frédéric Leroux, Charles S. Adams, Matthew Philip Austin JonesWe demonstrate number-resolved detection of individual strontium atoms in a long working distance low numerical aperture (NA = 0.26) tweezer. Using a camera based on single-photon counting technology, we determine the presence of an atom in the tweezer with a fidelity of 0.989(6) (and loss of 0.13(5)) within a 200 $\mu$s imaging time. Adding continuous narrow-line Sisyphus cooling yields similar fidelity, at the expense of much longer imaging times (30 ms). Under these conditions we determine whether the tweezer contains zero, one or two atoms, with a fidelity $>$0.8 in all cases with the high readout speed of the camera enabling real-time monitoring of the number of trapped atoms. Lastly we show that the fidelity can be further improved by using a pulsed cooling/imaging scheme that reduces the effect of camera dark noise.https://scipost.org/SciPostPhys.8.3.038 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Niamh Christina Jackson, Ryan Keith Hanley, Matthew Hill, Frédéric Leroux, Charles S. Adams, Matthew Philip Austin Jones |
spellingShingle |
Niamh Christina Jackson, Ryan Keith Hanley, Matthew Hill, Frédéric Leroux, Charles S. Adams, Matthew Philip Austin Jones Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer SciPost Physics |
author_facet |
Niamh Christina Jackson, Ryan Keith Hanley, Matthew Hill, Frédéric Leroux, Charles S. Adams, Matthew Philip Austin Jones |
author_sort |
Niamh Christina Jackson, Ryan Keith Hanley, Matthew Hill, Frédéric Leroux, Charles S. Adams, Matthew Philip Austin Jones |
title |
Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer |
title_short |
Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer |
title_full |
Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer |
title_fullStr |
Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer |
title_full_unstemmed |
Number-resolved imaging of $^{88}$Sr atoms in a long working distance optical tweezer |
title_sort |
number-resolved imaging of $^{88}$sr atoms in a long working distance optical tweezer |
publisher |
SciPost |
series |
SciPost Physics |
issn |
2542-4653 |
publishDate |
2020-03-01 |
description |
We demonstrate number-resolved detection of individual strontium atoms in a
long working distance low numerical aperture (NA = 0.26) tweezer. Using a
camera based on single-photon counting technology, we determine the presence of
an atom in the tweezer with a fidelity of 0.989(6) (and loss of 0.13(5)) within
a 200 $\mu$s imaging time. Adding continuous narrow-line Sisyphus cooling
yields similar fidelity, at the expense of much longer imaging times (30 ms).
Under these conditions we determine whether the tweezer contains zero, one or
two atoms, with a fidelity $>$0.8 in all cases with the high readout speed of
the camera enabling real-time monitoring of the number of trapped atoms. Lastly
we show that the fidelity can be further improved by using a pulsed
cooling/imaging scheme that reduces the effect of camera dark noise. |
url |
https://scipost.org/SciPostPhys.8.3.038 |
work_keys_str_mv |
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