Isotopic difference in the heteronuclear loss rate in a two-species surface trap

Holmes, Michael E.; Tscherneck, M.; Quinto‐Su, Pedro A.; Bigelow, N. P.

doi:10.1103/physreva.69.063408

Cited by 17 publications

(12 citation statements)

References 20 publications

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“…Here we consider ground-excited collisions in a mixture of Caesium (Cs) and Rubidium (Rb) [12,13] using a system which combines the advantages of both methods * Electronic address: widera@uni-bonn.de mentioned above. We deduce the loading and loss dynamics of single Cs atoms in the presence of a large Rb MOT, while both sub-systems are in steady state.…”

Section: Introductionmentioning

confidence: 99%

Single Cs atoms as collisional probes in a large Rb magneto-optical trap

et al. 2010

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We study cold interspecies collisions of cesium and rubidium in a strongly imbalanced system with single and few Cs atoms. Observation of the single-atom fluorescence dynamics yields insight into light-induced loss mechanisms, while both subsystems can remain in steady state. This significantly simplifies the analysis of the dynamics, as Cs-Cs collisions are effectively absent and the majority component remains unaffected, allowing us to extract a precise value of the Rb-Cs collision parameter. Extending our results to ground-state collisions would allow to use single neutral atoms as coherent probes for larger quantum systems.

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Section: Introductionmentioning

confidence: 99%

Single Cs atoms as collisional probes in a large Rb magneto-optical trap

et al. 2010

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“…More importantly, it is hard to implement the precise manipulation of individual trapping sites in such lattices, which is especially significant for quantum information processing, such as the capability of initializing, addressing and reading out the qubits. Furthermore, there is still an intensive search for the multi-species collisions, [11] entanglement, [12,13] interference [14,15] and quantum gate operations of neutral atoms, [16] as well as quantum many particle systems. [17] All of these physical processes rely on a controllable multi-well system to realize atom-atom interactions or controlled collisions.…”

Section: Introductionmentioning

confidence: 99%

Controllable optical multi-well trap and its optical lattices using compounded cosine patterns

周琦¹,

陆俊发²,

印建平³

2010

Chinese Phys. B

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This paper proposes a flexible scheme to form various optical multi-well traps for cold atoms or molecules by using a simple optical system composed of an compounded amplitude cosine-only grating and a single lens illuminated by a plane light wave or a Gaussian beam. Dynamic manipulation and evolution of multi-well trap can be easily implemented by controlling the modulation frequency of the cosine patterns. It also discusses how to expand this multi-well trap to two-dimensional lattices with single-or multi-well trap by using an orthogonally or non-orthogonally modulated grating, as well as using incoherent multi-beam illumination, and these results show that all the symmetric structures of two-dimensional Bravais lattices can be obtained facilely by using proposed scheme.

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“…The recent realization of Bose-Einstein condensates (BECs) of homonuclear alkali molecules [2][3][4][5] has raised the possibility of achieving the same with polar molecules for which novel effects [6] due to dipole-dipole interactions are predicted. The focus of a number of recent studies is the creation of the mixed alkali species, such as KRb [7][8][9][10][11], LiCs [12,13], NaCs [14], RbCs [15][16][17] or 85 Rb 87 Rb [18], from mixtures of the ultracold atomic gases. Alkali hydride molecules, however, have dipole moments which are significantly larger than many of the mixed alkali diatomics.…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted ultracold lithium-hydride molecule formation: stimulated versus spontaneous emission

Juarros

Kirby

Côté

2006

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

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We investigate the feasibility of forming ultracold LiH from a mixture of the ultracold atomic gases, by using B 1 as an intermediate state in the photoassociation process. Using accurate molecular potential energy curves and dipole transition moments, we calculate and compare two possible schemes to populate vibrational levels of the ground electronic state, X 1 + : (1) twophoton stimulated radiative association and (2) excitation to bound levels of the B 1 state, followed by spontaneous emission to the X 1 + state. With laser intensities and atomic densities that are easily attainable experimentally, we find that significant quantities of molecules can be formed in various v, J levels of the electronic ground state. We examine the spontaneous emission cascade which takes place from the upper vibrational levels on a time scale of milliseconds. We discuss the issue of back-stimulation for the two-photon process and ways to mitigate it. Because photon emission in the cascade process does not contribute to trap loss, a sizable population of molecules in v = 0 can be achieved.

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Isotopic difference in the heteronuclear loss rate in a two-species surface trap

Cited by 17 publications

References 20 publications

Single Cs atoms as collisional probes in a large Rb magneto-optical trap

Single Cs atoms as collisional probes in a large Rb magneto-optical trap

Controllable optical multi-well trap and its optical lattices using compounded cosine patterns

Laser-assisted ultracold lithium-hydride molecule formation: stimulated versus spontaneous emission

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