Rydberg rings

Olmos, Beatriz; Lesanovsky, Igor

doi:10.1039/c0cp01451f

Cited by 5 publications

(7 citation statements)

References 73 publications

(197 reference statements)

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“…Thus excitations will vanish and reappear at other positions while the image is acquired making the spatially resolved detection of Rydberg excitations impossible. To overcome this difficulty, alternative imaging schemes have been proposed [35,36].…”

Section: Iii1 Density Dependence On Resonancementioning

confidence: 99%

Nonlinear absorption and density-dependent dephasing in Rydberg electromagnetically-induced-transparency media

Gärttner

Evers

2013

Phys. Rev. A

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Light propagation through an ensemble of ultracold Rydberg atoms in an electromagnetically-induced-transparency (EIT) configuration is studied. In strongly interacting Rydberg EIT media, nonlinear optical effects lead to a nontrivial dependence of the degree of probe-beam attenuation on the medium density and on its initial intensity. We develop a Monte Carlo rate equation model that self-consistently includes the effect of the probe-beam attenuation to investigate the steady state of the Rydberg medium driven by two laser fields. We compare our results to recent experimental data and to results of other state-of-the-art models for light propagation in Rydberg EIT media. We find that for low probe field intensities, our results match the experimental data best if a density-dependent dephasing rate is included in the model. At higher probe intensities, our model deviates from other theoretical approaches, because it predicts a spectral asymmetry together with line broadening. These are likely due to off-resonant excitation channels, which, however, have not been observed in recent experiments. Atomic motion and coupling to additional Rydberg levels are discussed as possible origins for these deviations

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Section: Iii1 Density Dependence On Resonancementioning

confidence: 99%

Nonlinear absorption and density-dependent dephasing in Rydberg electromagnetically-induced-transparency media

Gärttner

Evers

2013

Phys. Rev. A

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“…After initial work mainly concerned with bulk properties of Rydberg ensembles, current effort focuses more and more on spatially resolved observations. This is motivated not least by experimental progress [5,6] and theoretical proposals [7,8] for spatially resolved excitation imaging. Also on the theoretical side, in particular rate equation models [9][10][11][12] and full many-body simulations on truncated Hilbert spaces [13][14][15][16][17][18][19][20][21][22][23] provide a handle to access spatially resolved properties.…”

Section: Introductionmentioning

confidence: 99%

Dynamic formation of Rydberg aggregates at off-resonant excitation

et al. 2013

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The dynamics of a cloud of ultra-cold two-level atoms is studied at off-resonant laser driving to a Rydberg state. We find that resonant excitation channels lead to strongly peaked spatial correlations associated with the buildup of asymmetric excitation structures. These aggregates can extend over the entire ensemble volume, but are in general not localized relative to the system boundaries. The characteristic distances between neighboring excitations depend on the laser detuning and on the interaction potential. These properties lead to characteristic features in the spatial excitation density, the Mandel Q parameter, and the total number of excitations. As an application an implementation of the three-atom CSWAP or Fredkin gate with Rydberg atoms is discussed. The gate not only exploits the Rydberg blockade, but also utilizes the special features of an asymmetric geometric arrangement of the three atoms. We show that continuous-wave off-resonant laser driving is sufficient to create the required spatial arrangement of atoms out of a homogeneous cloud.

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“…These have similar properties to (34), (35) and (36). In fact, (58) is peaked for k = k ′ 0 showing the predominant emission in the phase matched direction where the couplings (59), (60) are strongly suppressed because of the S ℓ [n] functions.…”

Section: Multiply Excited Statementioning

confidence: 61%

“…The phase matched direction favors the coupling between the symmetric excitations with respectively two and one excited atoms. This decay channel is separated from non-symmetric atomic states: the S functions (15) and (30), for single and double excitations, appear in (36) and (35), suppressing the contribution of these states to the emission around k ′ 0 . We specialize (32) to the case ℓ ′ = 0 corresponding to a double spin wave and reintroduce the coupling to the two-photon continua, giving…”

Section: A Timed Dicke Basis For Double Excitationmentioning

confidence: 99%

Retrieval of multiple spin waves from a weakly excited, metastable atomic ensemble

Bariani

Kennedy

2012

Phys. Rev. A

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The emission of light from a multiply excited atomic ensemble is examined and it is shown how symmetric (spin-wave) and non-symmetric states of excitation radiate into spatially separate field modes. This observation has potential application to single photon generation and spin wave entanglement, since in the presence of atomic interactions it can result in isolated single photon emission into a phase-matched field mode.

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Rydberg rings

Cited by 5 publications

References 73 publications

Nonlinear absorption and density-dependent dephasing in Rydberg electromagnetically-induced-transparency media

Nonlinear absorption and density-dependent dephasing in Rydberg electromagnetically-induced-transparency media

Dynamic formation of Rydberg aggregates at off-resonant excitation

Retrieval of multiple spin waves from a weakly excited, metastable atomic ensemble

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