Magnetic transport apparatus for the production of ultracold atomic gases in the vicinity of a dielectric surface

Händel, S.; Marchant, A. L.; Wiles, Timothy P.; Hopkins, S. A.; Cornish, Simon L.

doi:10.1063/1.3676161

Cited by 13 publications

(11 citation statements)

References 54 publications

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“…49,50 Whilst a MOT of Cs can be produced directly from a vapor, the high background pressure is not suitable for making ultracold or quantum degenerate clouds. Therefore, Cs should be loaded from either a second collection MOT 51,52 or a Zeeman slower. We have opted to use a dual species oven and Zeeman slower on our system as the more elegant solution, retaining optical access.…”

Section: System Overviewmentioning

confidence: 99%

Production and characterization of a dual species magneto-optical trap of cesium and ytterbium

Kemp

Butler

Freytag

et al. 2016

Review of Scientific Instruments

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. (2016) 'Production and characterisation of a dual species magneto-optical trap of cesium and ytterbium.', Review of scientic instruments., 87 (2). 023105.Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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Section: System Overviewmentioning

confidence: 99%

Production and characterization of a dual species magneto-optical trap of cesium and ytterbium

Kemp

Butler

Freytag

et al. 2016

Review of Scientific Instruments

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“…We create solitons of ∼2500 85 Rb atoms using methods described in previous publications 7, [36][37][38]…”

Section: Soliton Productionmentioning

confidence: 99%

Splitting and recombination of bright-solitary-matter waves

et al. 2020

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Solitons are long-lived wavepackets that propagate without dispersion and exist in a wide range of onedimensional (1D) nonlinear systems. A Bose-Einstein condensate trapped in a quasi-1D waveguide can support bright-solitary-matter waves (3D analogues of solitons) when interatomic interactions are sufficiently attractive that they cancel dispersion. Solitary-matter waves are excellent candidates for a new generation of highly sensitive interferometers, as their non-dispersive nature allows them to acquire phase shifts for longer times than conventional matter-waves interferometers. However, such an interferometer is yet to be realised experimentally. In this work, we demonstrate the splitting and recombination of a bright-solitary-matter wave on a narrow repulsive barrier, which brings together the fundamental components of an interferometer. We show that both interference-mediated recombination and classical velocity filtering effects are important, but for a sufficiently narrow barrier interference-mediated recombination can dominate. We reveal the extreme sensitivity of interference-mediated recombination to the experimental parameters, highlighting the potential of soliton interferometry.Bright-solitary waves, referred to as solitons in this work, are wavepackets that propagate in a quasi-1D geometry without dispersion, owing to a self-focussing nonlinearity. They are of fundamental interest in a broad range of settings due to their ubiquity in nonlinear systems, which occur prolifically in nature 1, 2 . In Bose-Einstein 1 arXiv:1906.06083v1 [cond-mat.quant-gas] 14 Jun 2019 condensates (BECs) the nonlinearity is provided by interatomic interactions governed by the s-wave scattering length, which can be tuned using a magnetic Feshbach resonance 3 . Bright solitons in BECs of 7 Li, 85 Rb, 39 K and 133 Cs have so far been experimentally demonstrated 4-10 . Understanding and probing the coherent phase carried by matter-wave solitons is an area of particular relevance for BEC physics, both because it is important in determining the stability of soliton-soliton collisions 10-14 and because there is a great interest in using solitons for atom interferometry 15-22 .Matter-wave interferometers have emerged as a means of achieving unprecedented sensitivity in interferometric measurements 23-26 . However, they have typically been limited by either interatomic collisions or dispersion of the atomic wavepackets, which cause dephasing and a reduced signal to noise, respectively 27 . Previous works have successfully reduced the impact of interatomic collisions through the control of interatomic interactions 28, 29 , or by generating squeezed states 30, 31 . However, dispersion remains a limitation. A soliton-based interferometer has the potential to overcome dispersion, allowing for much longer phase-accumulation times, albeit for an increased quantum noise 32 . To date, only one experiment has demonstrated interferometry with a soliton 8 , in which Bragg pulses were used for splitting and recombination. However, interferom...

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“…In particular, precision atom-surface force measurements of the CasimirPolder force require a stable and constant surface, which thus cannot be subject to the alkali vapor pressures of a MOT. 15 This requirement imposes a two chamber design with a MOT cell for laser cooling and a science cell for the atom chip. Even with this design, care must be taken to maintain a clean surface, since atoms transported into the science cell can be an inadvertent source of contamination, 16,17 albeit smaller.…”

Section: Apparatusmentioning

confidence: 99%

Atom chip apparatus for experiments with ultracold rubidium and potassium gases

Ivory

Ziltz

Fancher

et al. 2014

Review of Scientific Instruments

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We present a dual chamber atom chip apparatus for generating ultracold (87)Rb and (39)K atomic gases. The apparatus produces quasi-pure Bose-Einstein condensates of 10(4) (87)Rb atoms in an atom chip trap that features a dimple and good optical access. We have also demonstrated production of ultracold (39)K and subsequent loading into the chip trap. We describe the details of the dual chamber vacuum system, the cooling lasers, the magnetic trap, the multicoil magnetic transport system, the atom chip, and two optical dipole traps. Due in part to the use of light-induced atom desorption, the laser cooling chamber features a sufficiently good vacuum to also support optical dipole trap-based experiments. The apparatus is well suited for studies of atom-surface forces, quantum pumping and transport experiments, atom interferometry, novel chip-based traps, and studies of one-dimensional many-body systems.

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Magnetic transport apparatus for the production of ultracold atomic gases in the vicinity of a dielectric surface

Cited by 13 publications

References 54 publications

Production and characterization of a dual species magneto-optical trap of cesium and ytterbium

Production and characterization of a dual species magneto-optical trap of cesium and ytterbium

Splitting and recombination of bright-solitary-matter waves

Atom chip apparatus for experiments with ultracold rubidium and potassium gases

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