A ring trap for ultracold atoms in an RF-dressed state

Heathcote, W H; Nugent, E.; Sheard, B T; Foot, C. J.

doi:10.1088/1367-2630/10/4/043012

Cited by 90 publications

(122 citation statements)

References 22 publications

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“…Such states exist only for fermionic atoms. However, another possibility would be to use high-field states, with magnetic moments determined mostly by the electron spin M S rather than the total spin M. Strong radiofrequency fields have been generated on atom chips and used to shape trap potentials [27,28], and even to generate ring-shaped traps [3]. However, even if a node in a radiofrequency field can be positioned accurately enough, it will be challenging to produce the oscillating fields needed to form a CI within a few μm of the nodal plane.…”

Section: -2 Optically Induced Conical Intersections In mentioning

confidence: 99%

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Optically induced conical intersections in traps for ultracold atoms and molecules

Wallis

Hutson

2011

Phys. Rev. A

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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: -2 Optically Induced Conical Intersections In mentioning

confidence: 99%

“…Both magnetic [1][2][3][4] and optical [5] ring traps have been created. Such traps have potential uses in inertial sensing and in atom interferometry.…”

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confidence: 99%

Optically induced conical intersections in traps for ultracold atoms and molecules

Wallis

Hutson

2011

Phys. Rev. A

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“…Radio-frequency-dressed traps [1,2] have been widely used [3] to confine ultracold atoms in complex geometries, including shells [4] and rings [5]. These geometries are valuable in many fields, including condensate splitting and atom interferometry [6] and the study of low-dimensional quantum systems [7].…”

Section: Introductionmentioning

confidence: 99%

Inelastic losses in radio-frequency-dressed traps for ultracold atoms

Owens

Hutson

2017

Phys. Rev. A

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(2017) 'Inelastic losses in radio-frequency-dressed traps for ultracold atoms. ', Physical review A., 96 (4). 042707.Further information on publisher's website:https://doi.org/10.1103/PhysRevA.96.042707Publisher's copyright statement:Reprinted with permission from the American Physical Society: Owens, Daniel J. Hutson, Jeremy M. (2017). Inelastic losses in radio-frequency-dressed traps for ultracold atoms. Physical Review A 96(4): 042707 c 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modi ed, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.Additional information: 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-pro t 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. We calculate the rates of inelastic collisions for ultracold alkali-metal atoms in radio-frequency-dressed traps, using coupled-channel scattering calculations on accurate potential energy surfaces. We identify a radiofrequency-induced loss mechanism that does not exist in the absence of radio frequency (rf) radiation. This mechanism is not suppressed by a centrifugal barrier in the outgoing channel, and can be much faster than spin relaxation, which is centrifugally suppressed. We explore the dependence of the rf-induced loss rate on singlet and triplet scattering lengths, hyperfine splittings, and the strength of the rf field. We interpret the results in terms of an adiabatic model of the collision dynamics, and calculate the corresponding nonadiabatic couplings. The loss rate can vary by 10 orders of magnitude as a function of singlet and triplet scattering lengths. 87 Rb is a special case, where several factors combine to reduce rf-induced losses; as a result, they are slow compared to spin-relaxation losses. For most other alkali-metal pairs, rf-induced losses are expected to be much faster and may dominate.

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“…They offer the great advantage of a simple tailoring of the trap potential, allowing the realisation of a double well [6] or a ring trap [4,9] with dynamically adjustable parameters. The potential seen by the dressed atoms is due to the spatial variation of the RF coupling strength or the RF detuning, or both.…”

Section: Introductionmentioning

confidence: 99%

RF spectroscopy in a resonant RF-dressed trap

Easwaran

Longchambon

Pottie

et al. 2010

J. Phys. B: At. Mol. Opt. Phys.

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We study the spectroscopy of atoms dressed by a resonant radiofrequency (RF) field inside an inhomogeneous magnetic field and confined in the resulting adiabatic potential. The spectroscopic probe is a second, weak, RF field. The observed line shape is related to the temperature of the trapped cloud. We demonstrate evaporative cooling of the RF-dressed atoms by sweeping the frequency of the second RF field around the Rabi frequency of the dressing field.

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A ring trap for ultracold atoms in an RF-dressed state

Cited by 90 publications

References 22 publications

Optically induced conical intersections in traps for ultracold atoms and molecules

Optically induced conical intersections in traps for ultracold atoms and molecules

Inelastic losses in radio-frequency-dressed traps for ultracold atoms

RF spectroscopy in a resonant RF-dressed trap

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