Radiative lifetimes of Rydberg state of ytterbium

Fang, Dawei; Xie, W.J.; Zhang, Yi; Xiao, Hu; Liu, Yuyan

doi:10.1016/s0022-4073(00)00096-0

Cited by 10 publications

(8 citation statements)

References 3 publications

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“…Furthermore, macrodimer potentials can be induced through an external electric field, as shown for Cesium [22][23][24][25]. A promising candidate for macrodimer dressing schemes may also be Strontium or Ytterbium, since these possess metastable states with larger spatial overlap with Rydberg states, which provides enhanced coupling strengths significantly exceeding the ones obtained with other Alkali atoms [17,[35][36][37][38]. We first vary the principal quantum number n ∈ [25,75] and study the scaling of the potential well position R e , the potential well depth D e , the shift U 0 , the vibrational spacing ∆ ν and the Franck-Condon factor f 0 .…”

Section: A Scaling Properties and Tunabilitymentioning

confidence: 99%

Extended Bose-Hubbard models with ultracold magnetic atoms

Baier

Mark

Petter

et al. 2016

Science

356

358

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The Hubbard model underlies our understanding of strongly correlated materials. While its standard form only comprises interaction between particles at the same lattice site, its extension to encompass long-range interaction, which activates terms acting between different sites, is predicted to profoundly alter the quantum behavior of the system. We realize the extended Bose-Hubbard model for an ultracold gas of strongly magnetic erbium atoms in a three-dimensional optical lattice. Controlling the orientation of the atomic dipoles, we reveal the anisotropic character of the onsite interaction and hopping dynamics, and their influence on the superfluidto-Mott insulator quantum phase transition. Moreover, we observe nearest-neighbor interaction, which is a genuine consequence of the long-range nature of dipolar interactions. Our results lay the groundwork for future studies of novel exotic many-body quantum phases. PACS numbers: 67.85.Hj, 37.10.De, 51.60.+a, 05.30.Rt Dipolar interactions, reflecting the forces between a pair of magnetic or electric dipoles, account for many physically and biologically significant phenomena. These range from novel phases appearing at low temperatures in quantum many-body systems [1,2], liquid crystals and ferrofluids in soft condensed matter physics [3,4], to the mechanism underlying protein folding [5]. The distinguishing feature of dipole-dipole interactions (DDI) is their long-range and anisotropic character [6]: a pair of dipoles oriented in parallel will repel each other, while the interaction between two head to tail dipoles will be attractive. While remarkable progress has been made with gases of polar molecules [7] and Rydberg ensembles [8] comprising electric dipoles, it is the recent experimental advances in creating quantum degenerate gases of bosonic and fermionic magnetic atoms, including Cr [9-11] and the Lanthanides Er [12] and Dy [13], which have now opened the door to a study of magnetic dipolar interactions, and their unique role in Hubbard dynamics of a quantum lattice gas.Ultracold Lanthanide atoms with their open electronic fshells, and their anisotropic interactions are characterized by unconventional low energy scattering properties, including the proliferation of Feshbach resonances [14]. This complexity of Lanthanides manifests itself in quantum many-body dynamics: by preparing quantum degenerate Lanthanide gases in optical lattices we realize extended Hubbard models for bosonic and fermionic atoms. Here, in addition to the familiar single particle tunneling and isotropic onsite interactions (as for contact interactions in Alkali) dipolar interactions give rise to anisotropic onsite and nearest-neighbor (offsite) interactions (NNI), and density-assisted tunneling (DAT) [15]. Such extended Hubbard models have been studied extensively in theoretical condensed matter physics and quantum material science [16,17], and it is the competition between these unconventional Hubbard interactions, which underlies the prediction of exotic quantum phases such as super...

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Section: A Scaling Properties and Tunabilitymentioning

confidence: 99%

Extended Bose-Hubbard models with ultracold magnetic atoms

Baier

Mark

Petter

et al. 2016

Science

356

358

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“…Moreover, Ref. [130] shows that at room temperatures the lifetime is well approximated by τ ≈ 1.17(n − µ) 3 ns for these Rydberg states. According to the recent measurement in [103], we have µ ≈ 4.278.…”

Section: Appendix C: Lifetimes and Dipole Matrix Elementsmentioning

confidence: 94%

“…The lifetimes of high-lying Rydberg states of strontium are not wellknown but can be estimated from measurement results of low-lying Rydberg states. A search in the literature shows that the highest ytterbium Rydberg 1 S 0 state whose lifetime was ever measured has a principal quantum number n = 26 [130]. The measured lifetimes for the ytterbium 1 S 0 Rydberg states with principal quantum numbers n ∈ [21,26] show that their lifetimes are mainly limited by the blackbody radiation at room temperatures [130].…”

Section: Appendix C: Lifetimes and Dipole Matrix Elementsmentioning

confidence: 98%

Rydberg quantum computation with nuclear spins in two-electron neutral atoms

Shi

2021

Preprint

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Alkaline-earth-like (AEL) atoms with two valence electrons and a nonzero nuclear spin can be excited to Rydberg state for quantum computing. Typical AEL ground states possess no hyperfine splitting, but unfortunately a GHz-scale splitting seems necessary for Rydberg excitation. Though strong magnetic fields can induce a GHz-scale splitting, weak fields are desirable to avoid noise in experiments. Here, we provide two solutions to this outstanding challenge with realistic data of wellstudied AEL isotopes. In the first theory, the two nuclear spin qubit states |0 and |1 are excited to Rydberg states |r with detuning ∆ and 0, respectively, where a MHz-scale detuning ∆ arises from a weak magnetic field on the order of 1 G. With a proper ratio between ∆ and Ω, the qubit state |1 can be fully excited to the Rydberg state while |0 remains there. In the second theory, we show that by choosing appropriate intermediate states a two-photon Rydberg excitation can proceed with only one nuclear spin qubit state. The second theory is applicable whatever the magnitude of the magnetic field is. These theories bring a versatile means for quantum computation by combining the broad applicability of Rydberg blockade and the incomparable advantages of nuclear-spin quantum memory in two-electron neutral atoms.

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“…Bai and Mossberg performed lifetime studies involving the 6s6p 3 P o 1 and 6s7s 1 S 0 transition of atomic Yb [37]. Fang et al measured radiative lifetimes of the Rydberg states of ytterbium for 6sns 1 S 0 and 6snd 1 D 2 (n = 21-27) [38]. Liu and Wang evaluated the lifetimes for the perturbed 6snd 1 D 2 (n = 8-40) and 6snd 3 D 2 (n = 10-26) Rydberg levels of Yb I [39].…”

Section: Introductionmentioning

confidence: 99%

Energies, Landé Factors, and Lifetimes for Some Excited Levels of Neutral Ytterbium (Z = 70)

Karaçoban

Özdemir

2011

Acta Phys. Pol. A

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We have calculated relativistic energies, Landé factors, and lifetimes for some excited levels outside the core [Xe] in neutral ytterbium (Yb I, Z = 70) using two configuration interaction methods (multiconfiguration Hartree-Fock method within the framework of Breit-Pauli relativistic corrections developed by Fischer, and Cowan's relativistic Hartree-Fock method). Results obtained have been compared with other calculations and experiments. PACS: 31.15.ag, 31.15.aj,

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Radiative lifetimes of Rydberg state of ytterbium

Cited by 10 publications

References 3 publications

Extended Bose-Hubbard models with ultracold magnetic atoms

Extended Bose-Hubbard models with ultracold magnetic atoms

Rydberg quantum computation with nuclear spins in two-electron neutral atoms

Energies, Landé Factors, and Lifetimes for Some Excited Levels of Neutral Ytterbium (Z = 70)

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