Grating chips for quantum technologies

McGilligan, J. P.; Griffin, Paul F.; Elvin, Rachel; Ingleby, S.; Riis, Erling; Arnold, Aidan S.

doi:10.1038/s41598-017-00254-0

Cited by 77 publications

(52 citation statements)

References 33 publications

(49 reference statements)

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“…Meanwhile, the AMS could also find applications in experiments like those requiring evaporative cooling, where large numbers of atoms could be loaded into magnetic traps at high atomic density and, subsequently, long trap lifetimes could be obtained by lowering the density 21 . The microfabrication of this device complements mass production and implementation with other compact cold-atom devices to enable increased MOT-number control and stability in future quantum technologies 5,22,23 . The AMS pre-loaded with Rb is potentially able to replace the commercial AMDs in future, further simplifying vacuum assemblies and allowing for lower-power operation.…”

Section: Discussion and Summarymentioning

confidence: 99%

Magneto-optic trap using a reversible, solid-state alkali-metal source

et al. 2019

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We demonstrate a novel way to form and deplete a vapor-cell magneto-optic trap (MOT) using a reversible, solid-state alkali-metal source (AMS) via an applied polarized voltage. Using ~100 mW of electrical power, a trapped-atom number of 5×10 6 has been achieved starting from near zero and the timescales of the MOT formation and depletion of ~1 s. This fast, reversible, and lowpower alkali-atom source is desirable in both tabletop and portable cold-atom systems. The core technology of this device should translate readily to other alkali and alkaline-earth elements that could find a wide range of uses in cold-atom systems and instruments. I. BackgroundLaser cooling has revolutionized atom-based sensors and instrumentation. The low temperature of the atoms allows for long interaction periods and narrow spectroscopic linewidths that are critical for precision measurements. In all cold-atom systems, a source of (warm) atoms is required to provide an appropriate atom density for forming the MOT. Commercial rubidium (Rb) and cesium (Cs) alkali-metal dispensers (AMDs) 1 have been widely used in laboratory-based cold-atom experiments for decades due to their reliability and long lifetimes. However, these AMDs release alkali atoms via resistive heating, often requiring several watts during operation. Furthermore, dispensing via resistive heating is a non-reversible process; once the alkali metal is created, it cannot be recovered by the dispenser. This type of dispensing not only hinders the ability to precisely control the alkali-atom density for a cold-atom system over a large environmental temperature range, but also results in a long time constant for the alkali-atom density to decay, which negatively impacts the cycling rate, and hence performance, of cold-atom metrological experiments 2,3,4 . Such effects limit the use of AMDs in field-deployable, long-lifetime compact cold-atom sensors and clocks 5,6 .On the other hand, techniques like laser-ablated or current-pulsed AMDs 7,8,9 and light-induced atomic desorption (LIAD) 10,11,12,13 have been developed to considerably enhance the possibilities of modulating alkali-atom density in cold-atom systems. However, none of these techniques simultaneously meet the requirements of being fast, reversible, low-power and able to be miniaturized, which are important for developing a portable cold-atom physics package.Recent efforts have focused on novel solid-state alkali sources that operate via an electrolysis process 14,15 . A promising candidate material for this process is a beta double-prime alumina ( "alumina) ceramic, which features a high ionic mobility for alkali ions. By utilizing an applied voltage to control the flux of mobile alkali ions within the ceramic, this device has previously demonstrated bidirectional vapor-phase Rb sourcing and sinking functionality 16,17,18 . In this letter, we describe the novel implementation of a voltage-controlled, solid-state " -alumina Rb AMS to demonstrate the formation and depletion of a Rb MOT in a vapor cell.

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Section: Discussion and Summarymentioning

confidence: 99%

Magneto-optic trap using a reversible, solid-state alkali-metal source

et al. 2019

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“…Novel microfabricated structures, such as pyramidal [294][295][296][297][298] and grating-based reflectors, [299][300][301] have also been used to trap and cool atoms in simple, compact optical geometries. Atom chips 302 remain a compelling approach to manipulating laser-cooled atoms at the micro-scale and the compact systems 303 are beginning to be developed as clocks.…”

Section: à13mentioning

confidence: 99%

Chip-scale atomic devices

Kitching

2018

Applied Physics Reviews

428

175

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“…Extending our multiaxis AI to simultaneous operation will make it immune to vibration and enable more applications. Furthermore, marrying our single-diode atom interferometry with grating-based or tetrahedral MOTs [50][51][52][53], more deployable atomic sensors are foreseeable, such as on-chip gravimeters, gradiometers and gyroscopes.…”

Section: Resultsmentioning

confidence: 99%

Multiaxis atom interferometry with a single-diode laser and a pyramidal magneto-optical trap

Dudley

et al. 2017

Optica

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Atom interferometry has become one of the most powerful technologies for precision measurements. In order to develop simple, precise and versatile atom interferometers for inertial sensing, we demonstrate an atom interferometer measuring acceleration, rotation, and inclination by pointing Raman beams toward individual faces of a pyramidal mirror. Only a single diode laser is used for all functions, including atom trapping, interferometry, and detection. Efficient Doppler-sensitive Raman transitions are achieved without velocity selecting the atom sample, and with zero differential AC Stark shift between the cesium hyperfine ground states, increasing signal-to-noise and suppressing systematic effects. We measure gravity along two axes (vertical and 45 • to the vertical), rotation, and inclination with sensitivities of 6 µm/s 2 / √ Hz, 300 µrad/s/ √ Hz, and 4 µrad/ √ Hz, respectively. This work paves the way toward deployable multiaxis atom interferometers for geodesy, geology, or inertial navigation.

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Grating chips for quantum technologies

Cited by 77 publications

References 33 publications

Magneto-optic trap using a reversible, solid-state alkali-metal source

Magneto-optic trap using a reversible, solid-state alkali-metal source

Chip-scale atomic devices

Multiaxis atom interferometry with a single-diode laser and a pyramidal magneto-optical trap

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