Ion detection in the photoionization of a Rb Bose–Einstein condensate

Viteau, Matthieu; Radogostowicz, J.; Chotia, Amodsen; Bason, M. G.; Malossi, Nicola; Fuso, Francesco; Ciampini, Donatella; Morsch, O.; Ryabtsev, I. I.; Arimondo, E.

doi:10.1088/0953-4075/43/15/155301

Cited by 26 publications

(27 citation statements)

References 32 publications

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“…In our case, a decrease in the linewidth of laser radiation from 10 GHz to 1 MHz leads to a 10 4 time decrease in the generation probability of photo ions, whereby the latter will hardly affect the observed spectra. This will allow one to analyze other possible sources of formation of ultracold plasma in dense ensembles of cold Rydberg atoms, such as the photo ionization of Rydberg atoms by background thermal radiation [18], the Penning ionization under dipoledipole interaction of Rydberg atoms [19], and the photoionization of cold atoms by laser radiation [20]. …”

Section: Discussionmentioning

confidence: 99%

Effect of photoions on the line shape of the Förster resonance lines and microwave transitions in cold rubidium Rydberg atoms

Tretyakov

Бетеров

Энтин

et al. 2012

J. Exp. Theor. Phys.

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Experiments are carried out on the spectroscopy of the Förster resonance lines Rb(37P) + Rb(37P) Rb(37S) + Rb(38S) and microwave transitions nP n'S, n'D between Rydberg states of cold rubidium atoms in a magneto optical trap (MOT). Under ordinary conditions, all spectra exhibit a linewidth of 2-3 MHz irrespective of the interaction time between atoms or between atoms and microwave radiation, although the limit resonance width should be determined by the inverse interaction time. The analysis of exper imental conditions has shown that the main source of line broadening is the inhomogeneous electric field of cold photoions that are generated under the excitation of initial nP Rydberg states by broadband pulsed laser radia tion. The application of an additional electric field pulse that rapidly extracts photoions produced by a laser pulse leads to a considerable narrowing of lines of microwave resonances and the Förster resonance. Various sources of line broadening in cold Rydberg atoms are analyzed.

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Section: Discussionmentioning

confidence: 99%

Effect of photoions on the line shape of the Förster resonance lines and microwave transitions in cold rubidium Rydberg atoms

Tretyakov

Бетеров

Энтин

et al. 2012

J. Exp. Theor. Phys.

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“…The 5S atoms are excited to the 70S Rydberg state using a two-photon excitation process with detuning via the intermediate 6P level (see [25,16,26] for details). In the Rydberg excitation scheme the excitation lasers are detuned by 2 GHz from the 6P state, which can therefore be adiabatically eliminated and the laser interaction will be described by a two-level effective system with Rabi frequency Ω and laser detuning ∆.…”

Section: Rydberg Blockadementioning

confidence: 99%

“…The overall detection efficiency is η ≈ 40% [25]. During the entire excitation and detection sequence the MOT beams are switched off.…”

Section: Experimental Realizationmentioning

confidence: 99%

Strongly correlated excitation of a quasi-1D Rydberg gas

Malossi

Valado

Scotto

et al. 2014

J. Phys.: Conf. Ser.

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“…In order to avoid the formation of electric charges on the cell walls, which create uncontrolled electric fields, short pulses of a few µs duration are used. Under such conditions a collection efficiency of η = 35 ± 10 was measured 28 . This figure accounts for both the fraction of the produced charges transported to the channel electron multiplier through a two-stage acceleration and the multiplier detection efficiency.…”

Section: Apparatusmentioning

confidence: 99%