Techniques to cool and rotate Bose-Einstein condensates in time-averaged adiabatic potentials

Gildemeister, M.; Sherlock, Benjamin E.; Foot, C. J.

doi:10.1103/physreva.85.053401

Cited by 18 publications

(20 citation statements)

References 13 publications

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“…z W W   . We estimate the Rabi frequency of the applied field at 3.6 MHz as 2 30 kHz z p W = · by dressing trapped atoms with the probe field and measuring the displacement in the horizontal direction [35,36].…”

Section: Spectroscopy Of Rf-dressed Potentialsmentioning

confidence: 99%

Probing multiple-frequency atom-photon interactions with ultracold atoms

et al. 2019

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We dress atoms with multiple-radiofrequency (RF) fields and investigate the spectrum of transitions driven by an additional probe field. A complete theoretical description of this rich spectrum is presented, in which we find allowed transitions and determine their amplitudes using the resolvent formalism. Experimentally, we observe transitions up to sixth order in the probe field using RF spectroscopy of Bose-Einstein condensates trapped in single-and multiple-RF-dressed potentials. We find excellent agreement between theory and experiment, including the prediction and verification of previously unobserved transitions, even in the single-RF case.

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Section: Spectroscopy Of Rf-dressed Potentialsmentioning

confidence: 99%

Probing multiple-frequency atom-photon interactions with ultracold atoms

et al. 2019

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“…Guiding the atoms through an atomtronic circuit can provide very large areas and times, thus paving the way towards compact, ultra-sensitive matter-wave interferometers. A number of such circuits have been proposed and some demonstrated, e.g.using dipole potentials [9][10][11], magnetic traps on atom-chips [12][13][14], and using time-averaged adiabatic potentials (TAAPs) [15][16][17][18]. Michelson type interferometers have been demonstrated over distances of tens of micrometers [13,[19][20][21].…”

Section: Interferometry With Atomic Clocksmentioning

confidence: 99%

Matter-wave interferometers using TAAP rings

et al. 2016

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We present two novel matter-wave Sagnac interferometers based on ringshaped time-averaged adiabatic potentials (TAAP). For both the atoms are put into a superposition of two different spin states and manipulated independently using elliptically polarized rf-fields. In the first interferometer the atoms are accelerated by spin-state-dependent forces and then travel around the ring in a matter-wave guide. In the second one the atoms are fully trapped during the entire interferometric sequence and are moved around the ring in two spin-state-dependent 'buckets'. Corrections to the ideal Sagnac phase are investigated for both cases. We experimentally demonstrate the key atom-optical elements of the interferometer such as the independent manipulation of two different spin states in the ring-shaped potentials under identical experimental conditions.

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“…In this work we demonstrate MRF APs for the first time, creating a highly configurable double well potential with three radiofrequencies. Dynamic control over these potentials, which take the form of two parallel * christopher.foot@physics.ox.ac.uk sheets, can be achieved by manipulating the RF polarisation and amplitude, or properties of the underlying static field [2,20,21]. These traps are intrinsically state-and species-selective [19,22,23], with demonstrably low heating rates when created using macroscopic coils located a few cm from the atoms [14].…”

Section: Introductionmentioning

confidence: 99%

Ultracold atoms in multiple radio-frequency dressed adiabatic potentials

et al. 2018

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We present the first experimental demonstration of a multiple-radiofrequency dressed potential for the configurable magnetic confinement of ultracold atoms. We load cold 87 Rb atoms into a double well potential with an adjustable barrier height, formed by three radiofrequencies applied to atoms in a static quadrupole magnetic field. Our multiple-radiofrequency approach gives precise control over the double well characteristics, including the depth of individual wells and the height of the barrier, and enables reliable transfer of atoms between the available trapping geometries. We have characterised the multiple-radiofrequency dressed system using radiofrequency spectroscopy, finding good agreement with the eigenvalues numerically calculated using Floquet theory. This method creates trapping potentials that can be reconfigured by changing the amplitudes, polarizations and frequencies of the applied dressing fields, and easily extended with additional dressing frequencies.PACS numbers: 67.85.Hj, 37.10.Gh, 03.75.Dg II. ATOMS IN A MULTI-COMPONENT RF FIELDThe dressed-atom picture of atom-radiation interaction [28,29] can be used to describe atoms trapped arXiv:1706.01491v2 [cond-mat.quant-gas]

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Techniques to cool and rotate Bose-Einstein condensates in time-averaged adiabatic potentials

Cited by 18 publications

References 13 publications

Probing multiple-frequency atom-photon interactions with ultracold atoms

Probing multiple-frequency atom-photon interactions with ultracold atoms

Matter-wave interferometers using TAAP rings

Ultracold atoms in multiple radio-frequency dressed adiabatic potentials

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