Ex vacuo atom chip Bose-Einstein condensate

Squires, Matthew B.; Olson, Spencer E.; Kasch, Brian; Stickney, James; Erickson, Christopher; Crow, Jonathan A. R.; Carlson, Evan J.; Burke, John C.

doi:10.1063/1.4971838

Cited by 10 publications

(6 citation statements)

References 19 publications

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“…The trapping of alkaline-earth atoms using our apparatus would allow the development of portable optical frequency standards, which could be used for geodesy [48] or space-based gravitational wave detection [49] and will be necessary for future redefinition of the SI second [50]. A multiple-length Z-wire magnetic trap [51] could be patterned onto the back of our grating chip; permitting atoms to be pulled closer to the chip surface for chipscale atom interferometers [32,52] or quantum memories [33,34]. The tetrehedral MOT configuration should also be applicable to "type-II" MOTs [53,54], which are used to laser-cool and trap molecules [55,56].…”

Section: Discussionmentioning

confidence: 99%

Single-Beam Zeeman Slower and Magneto-Optical Trap Using a Nanofabricated Grating

et al. 2019

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We demonstrate a compact (0.25 L) system for laser cooling and trapping atoms from a heated dispenser source. Our system uses a nanofabricated diffraction grating to generate a magnetooptical trap (MOT) using a single input laser beam. An aperture in the grating allows atoms from the dispenser to be loaded from behind the chip, increasing the interaction distance of atoms with the cooling light. To take full advantage of this increased distance, we extend the magnetic field gradient of the MOT to create a Zeeman slower. The MOT traps approximately 10 6 7 Li atoms emitted from an effusive source with loading rates greater than 10 6 s −1 . Our design is portable to a variety of atomic and molecular species and could be a principal component of miniaturized cold-atom-based technologies.

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Section: Discussionmentioning

confidence: 99%

Single-Beam Zeeman Slower and Magneto-Optical Trap Using a Nanofabricated Grating

et al. 2019

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“…The experiment uses two epoxied glass vacuum cells [27] separated by a mini-conflat flange cross, as shown in Fig. 4.…”

Section: Methodsmentioning

confidence: 99%

“…Guided by the results of the previous section, an experiment is built to demonstrate the 2D GMOT. The experiment uses two epoxied glass vacuum cells [27] separated by a mini-conflat flange cross, as shown in Fig. 4.…”

Section: Methodsmentioning

confidence: 99%

Two-dimensional grating magneto-optical trap

Imhof

Stuhl²,

Kasch³

et al. 2017

Phys. Rev. A

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We demonstrate a two dimensional grating magneto-optical trap (2D GMOT) with a single input cooling laser beam and a planar diffraction grating using 87 Rb. This configuration increases experimental access when compared with a traditional 2D MOT. As described in the paper, the output flux is several hundred million rubidium atoms/s at a mean velocity of 16.5(9) m/s and a velocity distribution of 4(3) m/s standard deviation. We use the atomic beam from the 2D GMOT to demonstrate loading of a three dimensional grating MOT (3D GMOT) with 2.46(7) × 10 8 atoms. Methods to improve output flux are discussed.

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“…Our atom chip experiment is described in Refs. [50,51]. It uses multiple independently-controlled wires to produce configurable magnetic potentials, V (x, t) ≈ c 2 x 2 + c 1 (t)x, where we choose by design to suppress higherorder terms here.…”

Section: Experiments II -Atom Chipmentioning

confidence: 99%

Husimi-driven many-body systems realised with Bose-Einstein condensates

Mommers¹,

Pritchard²,

Bell³

et al. 2021

Preprint

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Quantum systems with exact analytic solutions are rare, with most systems of interest requiring perturbative or other approximate methods to produce theoretical models. Husimi's 1953 solution to the Schrödinger equation for the linearly driven (see-saw) harmonic oscillator results in an exact solution for a wavepacket spatially translated but otherwise unperturbed by the driving force. In this work, we consider this Husimi driving scheme applied to a Bose-Einstein condensate (BEC), and further extend the theoretical solution to include interacting many-body systems in arbitrary states. We experimentally implement this solution in both optically-and magnetically-trapped BEC systems, subject to resonant or off-resonant driving by a linear magnetic potential. The observed trajectories of the centre-of-mass agree with theory, showing minimal excitation of the condensate. Based on these results, we propose Husimi driving as a platform for precision control of one-body, few-body, and many-body systems, and demonstrate its application to high-fidelity condensate transport at 72 times faster than adiabatic speeds. We demonstrate the platform's utility in trap frequency measurement and introduce a Husimi driving-based scheme for atom interferometry.

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Ex vacuo atom chip Bose-Einstein condensate

Cited by 10 publications

References 19 publications

Single-Beam Zeeman Slower and Magneto-Optical Trap Using a Nanofabricated Grating

Single-Beam Zeeman Slower and Magneto-Optical Trap Using a Nanofabricated Grating

Two-dimensional grating magneto-optical trap

Husimi-driven many-body systems realised with Bose-Einstein condensates

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