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公开(公告)号：US10545461B1
公开(公告)日：2020-01-28
申请号：US15639391
申请日：2017-06-30
发明人： Christopher S. Roper , Adam F. Gross , Matthew T. Rakher , Logan D. Sorenson , John J. Vajo , Jason A. Graetz , Russell Mott , Danny Kim
摘要： Some variations provide an alkali metal or alkaline earth metal vapor cell with a solid ionic conductor and intercalable-compound electrodes. The intercalable-compound electrodes are used as efficient sources and/or as sinks for alkali metal or alkaline earth metal atoms, thus enabling electrical control over metal atom content in the vapor cell. Some variations provide a vapor-cell system comprising: a vapor-cell region configured to allow a vapor-cell optical path into a vapor-cell vapor phase; a first electrode containing an intercalable compound capable of being intercalated by at least one element selected from Rb, Cs, Na, K, or Sr; a second electrode electrically isolated from the first electrode; and an ion-conducting layer between the first electrode and the second electrode. The ion-conducting layer is ionically conductive for at least one ionic species selected from Rb+, Cs+, Na+, K+, or Sr2+. The first intercalable compound is preferably a carbonaceous material, such as graphite.
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公开(公告)号：US09837177B1
公开(公告)日：2017-12-05
申请号：US15271353
申请日：2016-09-21
摘要： The present invention provides a vapor-cell system comprising: a vapor-cell region configured for vapor-cell optical paths; a first electrode disposed in contact with the vapor-cell region; a second electrode electrically isolated from the first electrode; and an ion conductor interposed between the first electrode and the second electrode. The first electrode, the ion conductor, and the second electrode collectively form a bidirectional solid-state electrochemical charge-depletion capacitor. The ion conductor is ionically conductive for mobile ions, such as Rb+, Cs+, Na+, K+, or Sr2+. The first electrode is permeable to the mobile ions and/or neutral atoms formed from the mobile ions. The system can be electrically controlled to quickly pump mobile ions into or out of the vapor-cell region. The system may further contain an atom chip, and the vapor-cell optical paths may be configured to trap a population of cold atoms. Methods of operating these vapor-cell systems are also disclosed.
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公开(公告)号：US09763314B1
公开(公告)日：2017-09-12
申请号：US15203298
申请日：2016-07-06
IPC分类号： H05H3/02
摘要： In some variations, a vapor-cell system comprises: a vapor-cell region configured to allow at least one vapor-cell optical path into a vapor phase within the vapor-cell region; a first electrode disposed in contact with the vapor-cell region; a second electrode that is electrically isolated from the first electrode; and a transparent ion-conducting layer interposed between the first electrode and the second electrode, wherein the transparent ion-conducting layer is optically transparent over a selected optical band of electromagnetic wavelengths. Some embodiments provide a magneto-optical trap or atomic-cloud imaging apparatus, comprising: the disclosed vapor-cell system; a source of laser beams configured to provide three orthogonal vapor-cell optical paths through the vapor-cell gas phase, to trap or image a population of cold atoms; and a magnetic-field source configured to generate magnetic fields within the vapor-cell region. Methods of use are also disclosed herein.
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公开(公告)号：US10775748B1
公开(公告)日：2020-09-15
申请号：US16720139
申请日：2019-12-19
发明人： Christopher S. Roper , Adam F. Gross , Matthew T. Rakher , Logan D. Sorenson , John J. Vajo , Jason A. Graetz , Russell Mott , Danny Kim
摘要： Some variations provide an alkali metal or alkaline earth metal vapor cell with a solid ionic conductor and intercalable-compound electrodes. The intercalable-compound electrodes are used as efficient sources and/or as sinks for alkali metal or alkaline earth metal atoms, thus enabling electrical control over metal atom content in the vapor cell. Some variations provide a vapor-cell system comprising: a vapor-cell region configured to allow a vapor-cell optical path into a vapor-cell vapor phase; a first electrode; a second electrode electrically isolated from the first electrode, wherein the second electrode contains an intercalable compound intercalated by an element selected from Rb, Cs, Na, K, or Sr; and an ion-conducting layer between the first electrode and the second electrode. The ion-conducting layer is ionically conductive for at least one ionic species selected from Rb+, Cs+, Na+, K+, or Sr2+. The intercalable compound is preferably a carbonaceous material, such as graphite.
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5.发明授权公开(公告)号：US10056913B1
公开(公告)日：2018-08-21
申请号：US14879510
申请日：2015-10-09
IPC分类号： H03L7/26
摘要： A vapor-cell system and method is provided, comprising an enclosed vapor-cell region containing a vapor-cell gas phase comprising a vapor-cell alkali or alkaline earth metal, wherein the vapor-cell region is configured to allow at least one vapor-cell optical path through the vapor-cell gas phase; an enclosed reservoir region containing a reservoir alkali or alkaline earth metal, wherein the reservoir region is in vapor isolation from the vapor-cell region; a solid electrolyte disposed in ionic communication between the vapor-cell region and the reservoir region; a first electrode disposed between the solid electrolyte and the vapor-cell region; and a second electrode disposed between the solid electrolyte and the reservoir region, wherein the second electrode is electrically isolated from the first electrode. This vapor-cell system enables independent control of the alkali or alkaline earth vapor pressure in the vapor cell. The principles disclosed herein can improve long-term frequency stability in systems having vapor cells.
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