2019
DOI: 10.1103/physreva.100.033604
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Engineering momentum profiles of cold-atom beams

Abstract: We describe a procedure for engineering beams of cold atoms by selectively draining particles from a trapped gas based on momenta. Atoms escape through a filter potential that only transmits atoms with the desired momenta. We outline an algorithm that outputs a filter potential that produces a pre-specified beam momentum profile. We illustrate this procedure for the case of a narrow band-pass (NBP) quantum filter. Lastly, we discuss the application of the NBP filter for probing the self-energy and effective ma… Show more

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Cited by 7 publications
(10 citation statements)
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References 49 publications
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“…[37] to the problem of impurity in a threedimensional unitary Bose gas at absolute zero. Such a mean-field-like treatments [38,39], regardless of their simplicity, were recently demonstrated [40][41][42][43] to be quite efficient for the description, in reasonable agreement with the Monte Carlo simulations [44,45] of Bose polarons in one dimension. In contrast to one-dimensional systems, where the effects of quantum fluctuations are strongly exhausted [46] a behavior of impurities in higher dimensions is known to be much influenced by the few-body physics.…”
Section: Introductionsupporting
confidence: 63%
“…[37] to the problem of impurity in a threedimensional unitary Bose gas at absolute zero. Such a mean-field-like treatments [38,39], regardless of their simplicity, were recently demonstrated [40][41][42][43] to be quite efficient for the description, in reasonable agreement with the Monte Carlo simulations [44,45] of Bose polarons in one dimension. In contrast to one-dimensional systems, where the effects of quantum fluctuations are strongly exhausted [46] a behavior of impurities in higher dimensions is known to be much influenced by the few-body physics.…”
Section: Introductionsupporting
confidence: 63%
“…We consider a system of one-dimensional spin-1/2 cold atomic gas with the two spin components coupled by a laser field with Rabi frequency Ω. The momentum-dependent gain in the spin-↑ component can be realized by injecting spin-↑ atoms into the system using an atom laser with appropriate momentum distribution [72,74,75]. Especially, ref.…”
Section: Experimental Realizationsmentioning
confidence: 99%
“…Especially, ref. [75] proposed a procedure to produce cold-atom beams with the Lorentzian profile of momentum distribution. And according to ref.…”
Section: Experimental Realizationsmentioning
confidence: 99%
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“…Besides of explicit accounting for the external trapping potential and description of topologically non-trivial objects in dilute Bose condensates in low dimensions or restricted geometries, the MF was shown [4] to be useful in the Bose polaron problem. Being able to describe both the self-localization phenomenon [5][6][7][8][9][10] and translationinvariant [11] states of impurity by an appropriate choice of the wave function, the MF approximation was demonstrated [12][13][14] to be quite accurate analytical tool in the problem of one dimension (1D) Bose polaron. In recent years a single impurity atom immersed in Bose condensates have attracted much attention not least because of the experimental realization of 3D [15,16] Bose polarons.…”
Section: Introductionmentioning
confidence: 99%