Adsorbate electric fields on a cryogenic atom chip

We investigate the behavior of electric fields originating from adsorbates deposited on a cryogenic atom chip as it is cooled from room temperature to cryogenic temperature. Using Rydberg electromagnetically induced transparency, we measure the field strength versus distance from a 1 mm square of yt...

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Main Authors: Chan, K. S., Dumke, Rainer Helmut, Siercke, M., Hufnagel, C.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/101855
http://hdl.handle.net/10220/18799
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1018552023-02-28T19:43:21Z Adsorbate electric fields on a cryogenic atom chip Chan, K. S. Dumke, Rainer Helmut Siercke, M. Hufnagel, C. School of Physical and Mathematical Sciences DRNTU::Science::Physics::Atomic physics We investigate the behavior of electric fields originating from adsorbates deposited on a cryogenic atom chip as it is cooled from room temperature to cryogenic temperature. Using Rydberg electromagnetically induced transparency, we measure the field strength versus distance from a 1 mm square of yttrium barium copper oxide (YBCO) patterned onto a yttria stabilized zirconia chip substrate. We find a localized and stable dipole field at room temperature and attribute it to a saturated layer of chemically adsorbed rubidium atoms on the YBCO. As the chip is cooled towards 83 K we observe a change in sign of the electric field as well as a transition from a localized to a delocalized dipole density. We relate these changes to the onset of physisorption on the chip surface when the van der Waals attraction overcomes the thermal desorption mechanisms. Our findings suggest that through careful selection of substrate materials, it may be possible to reduce the electric fields caused by atomic adsorption on chips, opening up experiments to controlled Rydberg-surface coupling schemes. Published version 2014-02-14T07:54:09Z 2019-12-06T20:45:46Z 2014-02-14T07:54:09Z 2019-12-06T20:45:46Z 2014 2014 Journal Article Chan, K., Siercke, M., Hufnagel, C., & Dumke, R. (2014). Adsorbate Electric Fields on a Cryogenic Atom Chip. Physical Review Letters, 112(2), 026101. https://hdl.handle.net/10356/101855 http://hdl.handle.net/10220/18799 10.1103/PhysRevLett.112.026101 en Physical review letters © 2014 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevLett.112.026101].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Physics::Atomic physics
spellingShingle DRNTU::Science::Physics::Atomic physics
Chan, K. S.
Dumke, Rainer Helmut
Siercke, M.
Hufnagel, C.
Adsorbate electric fields on a cryogenic atom chip
description We investigate the behavior of electric fields originating from adsorbates deposited on a cryogenic atom chip as it is cooled from room temperature to cryogenic temperature. Using Rydberg electromagnetically induced transparency, we measure the field strength versus distance from a 1 mm square of yttrium barium copper oxide (YBCO) patterned onto a yttria stabilized zirconia chip substrate. We find a localized and stable dipole field at room temperature and attribute it to a saturated layer of chemically adsorbed rubidium atoms on the YBCO. As the chip is cooled towards 83 K we observe a change in sign of the electric field as well as a transition from a localized to a delocalized dipole density. We relate these changes to the onset of physisorption on the chip surface when the van der Waals attraction overcomes the thermal desorption mechanisms. Our findings suggest that through careful selection of substrate materials, it may be possible to reduce the electric fields caused by atomic adsorption on chips, opening up experiments to controlled Rydberg-surface coupling schemes.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Chan, K. S.
Dumke, Rainer Helmut
Siercke, M.
Hufnagel, C.
format Article
author Chan, K. S.
Dumke, Rainer Helmut
Siercke, M.
Hufnagel, C.
author_sort Chan, K. S.
title Adsorbate electric fields on a cryogenic atom chip
title_short Adsorbate electric fields on a cryogenic atom chip
title_full Adsorbate electric fields on a cryogenic atom chip
title_fullStr Adsorbate electric fields on a cryogenic atom chip
title_full_unstemmed Adsorbate electric fields on a cryogenic atom chip
title_sort adsorbate electric fields on a cryogenic atom chip
publishDate 2014
url https://hdl.handle.net/10356/101855
http://hdl.handle.net/10220/18799
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