Ultracold Long-Range Rydberg Molecules with Complex Multichannel Spectra

Eiles, Matthew T.; Greene, Chris H.

doi:10.1103/physrevlett.115.193201

Cited by 22 publications

(15 citation statements)

References 49 publications

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“…The phase shifts δ s (k) and δ p (k) are required as an input for the interaction potential and are typically extracted from computational solutions of twoactive electron models [54,55,66,67] in combination with analytical low-energy expansions based on modified effective range theory [68][69][70]. The pseudopotential formalism is quite general and applies also to ULRMs consisting of complex multichannel Rydberg atoms such as Ca or Si [71].…”

Section: Theoretical Descriptionmentioning

confidence: 99%

Ultralong-range Rydberg molecules

2019

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We review ultralong-range Rydberg molecules (ULRM), which are bound states between a Rydberg atom and one or more ground-state atoms with bond lengths on the order of thousands of Bohr radii. The binding originates from multiple electron-atom scattering and leads to exotic oscillatory potential energy surfaces that reflect the probability density of the Rydberg electron. This unconventional binding mechanism opens fascinating possibilities to tune molecular properties via weak external fields, to study spin-resolved low-energy electron-atom scattering as well as to control and to probe interatomic forces in few-and many-body systems. Here, we provide an overview on recent theoretical and experimental progress in the field with an emphasis on polyatomic ULRMs, field control and spin interactions.

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Section: Theoretical Descriptionmentioning

confidence: 99%

Ultralong-range Rydberg molecules

2019

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“…However, their lifetimes are shorter, and a two-photon process is required to access the (n − 4)S character of the trilobite admixture. Another scheme has been proposed in Ca, where trilobite-like molecules can be excited via two-photon excitation of the nD state due to level shifts from doubly excited states [62]. Even low-l molecules exhibit weakly polar behavior from their small admixture of trilobite-sized dipole moments [63,64].…”

Section: Calculation Of the Intermolecular Interactionmentioning

confidence: 99%

Anisotropic blockade using pendular long-range Rydberg molecules

et al. 2017

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We propose an experiment to demonstrate a novel blockade mechanism caused by long-range anisotropic interactions in an ultracold dipolar gas composed of the recently observed "butterfly" Rydberg molecules. At the blockade radius, the strong intermolecular interaction between two adjacent molecules shifts their molecular states out of resonance with the photoassociation laser, preventing their simultaneous excitation. When the molecules are prepared in a quasi-one-dimensional (Q1D) trap, the interaction's strength can be tuned via a weak external field. The molecular density thus depends strongly on the angle between the trap axis and the field. The available Rydberg and internal molecular states provide a wide range of tunability.

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“…Rydberg excitation in dense cold atom samples can lead to the formation of ultralong-range Rydberg molecules in which scattering of the Rydberg electron from neighboring ground-state atoms leads to the binding of one, or more, ground-state atoms in multiple possible vibrational levels [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Measurements of such weaklybound Rydberg molecules have also been extended to dense BECs and higher n values where the Rydberg electron orbit can enclose tens to hundreds of ground-state atoms [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopy of Sr87 triplet Rydberg states

et al. 2018

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A combined experimental and theoretical spectroscopic study of high-n, 30 n 100, triplet S and D Rydberg states in 87 Sr is presented. 87 Sr has a large nuclear spin, I = 9/2, and at high-n the hyperfine interaction becomes comparable to, or even larger than, the fine structure and singlet-triplet splittings which poses a considerable challenge both for precision spectroscopy and for theory. For high-n S states, the hyperfine shifts are evaluated non-perturbatively taking advantage of earlier spectroscopic data for the I = 0 isotope 88 Sr, which results in good agreement with the present measurements. For the D states, this procedure is reversed by first extracting from the present 87 Sr measurements the energies of the 3 D1,2,3 states to be expected for isotopes without hyperfine structure ( 88 Sr) which allows the determination of corrected quantum defects in the high-n limit. arXiv:1808.05987v1 [physics.atom-ph]

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Ultracold Long-Range Rydberg Molecules with Complex Multichannel Spectra

Cited by 22 publications

References 49 publications

Ultralong-range Rydberg molecules

Ultralong-range Rydberg molecules

Anisotropic blockade using pendular long-range Rydberg molecules

Spectroscopy of Sr87 triplet Rydberg states

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