Dynamics of resonant energy transfer in a cold Rydberg gas

Westermann, Sebastian; Amthor, Thomas; Oliveira, A.L. de; Deiglmayr, Johannes; Reetz‐Lamour, M.; Weidemüller, Matthias

doi:10.1140/epjd/e2006-00130-3

Cited by 71 publications

(85 citation statements)

References 20 publications

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“…We use a Stark-switching technique [10][11][12][13] to switch the Rydberg interactions on and off, as depicted in Fig. 1(b).…”

Section: Methodsmentioning

confidence: 99%

“…For large , however, the time evolution is very slow, as described by the second term in Eq. (13). If = 0, the line shape is given by the undamped Rabi-like oscillations for arbitrary t,…”

Section: Theory For the Förster Resonance Line Shapementioning

confidence: 99%

“…However, scanning the electric field by just 50 mV/cm shifts the Rydberg level out of resonance with the laser radiation, as the cw lasers have linewidths below 1 MHz [9]. In order to avoid this problem, one needs to apply a Stark-switching technique [11][12][13][14] to excite the atoms first in a fixed electric field and then to induce the interactions in a lower electric field, which is scanned across the Förster resonance [10,13], as shown in Fig. 1(b).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field

et al. 2016

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“…We use a Stark-switching technique [10][11][12][13] to switch the Rydberg interactions on and off, as depicted in Fig. 1(b).…”

Section: Methodsmentioning

confidence: 99%

“…For large , however, the time evolution is very slow, as described by the second term in Eq. (13). If = 0, the line shape is given by the undamped Rabi-like oscillations for arbitrary t,…”

Section: Theory For the Förster Resonance Line Shapementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field

et al. 2016

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“…This offers the possibility to study coherent transport and the effect of environmental changes (e.g., an increase in the temperature or of an external field). Rydberg gases turn out to be very well suited to study the dynamics of excitations [10][11][12]. At ultra-low temperatures the dynamics in an ensemble of atoms can be efficiently modeled by continuous-time quantum walks [13].…”

Section: Introductionmentioning

confidence: 99%

Environment-assisted quantum transport and trapping in dimers

Mülken

Schmid

2010

Phys. Rev. E

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We study the dynamics and trapping of excitations for a dimer with an energy off-set ∆ coupled to an external environment. Using a Lindblad quantum master equation approach, we calculate the survival probability Π(t) of the excitation and define different lifetimes τs of the excitation, corresponding to the duration of the decay of Π(t) in between two predefined values. We show that it is not possible to always enhance the overall decay to the trap. However, it is possible, even for not too small environmental couplings and for values of ∆ of the order O(1), to decrease certain lifetimes τs, leading to faster decay of Π(t) in these time intervals: There is an optimal environmental coupling, leading to a maximal decay for fixed ∆.

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“…Thus, a small electric field of E = 1 V/cm can shift the Rydberg state by several hundred linewidths. On the other hand, moderate electric fields can be used to manipulate Rydberg atom properties, including the use of Förster tuning of interactions [30][31][32][33][34] or spatially resolved excitation using inhomogeneous electric fields [35]. Another important consideration is stray fields, caused for example by the presence of a few spurious ions [2].…”

Section: Methodsmentioning

confidence: 99%

An experimental approach for investigating many-body phenomena in Rydberg-interacting quantum systems

et al. 2013

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Recent developments in the study of ultracold Rydberg gases demand an advanced level of experimental sophistication, in which high atomic and optical densities must be combined with excellent control of external fields and sensitive Rydberg atom detection. We describe a tailored experimental system used to produce and study Rydberg-interacting atoms excited from dense ultracold atomic gases. The experiment has been optimized for fast duty cycles using a high flux cold atom source and a three beam optical dipole trap. The latter enables tuning of the atomic density and temperature over several orders of magnitude, all the way to the Bose-Einstein condensation transition. An electrode structure surrounding the atoms allows for precise control over electric fields and single-particle sensitive field ionization detection of Rydberg atoms. We review two experiments which highlight the influence of strong Rydberg-Rydberg interactions on different many-body systems. First, the Rydberg blockade effect is used to pre-structure an atomic gas prior to its spontaneous evolution into an ultracold plasma. Second, hybrid states of photons and atoms called dark-state polaritons are studied. By looking at the statistical distribution of Rydberg excited atoms we reveal correlations between dark-state polaritons. These experiments will ultimately provide a deeper understanding of many-body phenomena in strongly-interacting regimes, including the study of strongly-coupled plasmas and interfaces between atoms and light at the quantum level.

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Dynamics of resonant energy transfer in a cold Rydberg gas

Cited by 71 publications

References 20 publications

Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field

Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field

Environment-assisted quantum transport and trapping in dimers

An experimental approach for investigating many-body phenomena in Rydberg-interacting quantum systems

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