2018
DOI: 10.1103/physrevapplied.10.044034
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High-efficiency cold-atom transport into a waveguide trap

Abstract: We have developed and characterized an atom-guiding technique that loads 3 × 10 6 cold rubidium atoms into hollow-core optical fibre, an order-of-magnitude larger than previously reported results. This result was possible because it was guided by a physically realistic simulation that could provide the specifications for loading efficiencies of 3.0 % and a peak optical depth of 600. The simulation further showed that the demonstrated loading efficiency is limited solely by the geometric overlap of the atom clo… Show more

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Cited by 20 publications
(32 citation statements)
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“…In many cases optical dipole traps are used to localise the atomic ensemble in a controllable way. These can be used to hold the atomic sample for a long duration [12,17,18] or to transport the atoms into a confined geometry such as a hollow-core fibre [19][20][21][22][23][24] or near to a structured device such as an atomic chip [25][26][27][28].…”
Section: Introductionmentioning
confidence: 99%
“…In many cases optical dipole traps are used to localise the atomic ensemble in a controllable way. These can be used to hold the atomic sample for a long duration [12,17,18] or to transport the atoms into a confined geometry such as a hollow-core fibre [19][20][21][22][23][24] or near to a structured device such as an atomic chip [25][26][27][28].…”
Section: Introductionmentioning
confidence: 99%
“…The coherence time of stationary atoms has been demonstrated to few milliseconds [8]. Trapping and guiding of atoms in hollow-core photonic crystal fibres [9][10][11] have been demonstrated over centimeter distances [12][13][14][15][16][17][18][19]; however, the ability to maintain the coherence of quantum superposition states * sylan@ntu.edu.sg over a large distance is still unclear. A moving atom interferometer has been demonstrated inside a hollow-core photonic crystal fibre, but the coherence time was limited by the dephasing caused by the trapping potential to tens of microseconds [16].…”
mentioning
confidence: 99%
“…Except for this sudden dropping of transporting efficiency, in the figure one also notices a slowly dropping of the total transported atom number as the transporting velocity increases. Mathematically, this is because, for a large value of v, the factor exp [ivx] in equation (13) contributes a fast oscillation, which will reduce the transported matterwave amplitude. Physically, this can be explained by the fact that a faster moving of the potential tends to excite more atoms out of the trapping well.…”
Section: Transportationmentioning
confidence: 99%