Electronic structure of ultralong-range Rydberg penta-atomic molecules with two polar diatomic molecules

Aguilera-Fernández, Javier; Sadeghpour, H. R.; Schmelcher, Peter; González‐Férez, Rosario

doi:10.1103/physreva.96.052509

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…Likewise, it could even be possible to form more exotic systems consisting of Rydberg atoms bound to LRRMs, an extreme version of the Rydberg-polar perturber molecules predicted in Refs. [162,163,164,165,166] .…”

Section: Discussionmentioning

confidence: 99%

“…33 Just as Rydberg molecules (of the H 2 variety), ultra-LRRMs, and Rydberg-Rydberg macrodimers can be easily confused due to their similar appellations, so it is with polyatomic Rydberg molecules. Several references have investigated a different type of polyatomic molecule formed by replacing the perturber with a polar dimer such as KRb [162][163][164][165], or even with several polar perturbers [166]. 34 This is strictly true only if the scattering length is equal for all perturbers; in fact, the PECs are eigenvalues of a generalized matrix equation…”

Section: Polyatomic Rydberg Moleculesmentioning

confidence: 99%

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Trilobites, butterflies, and other exotic specimens of long-range Rydberg molecules

Eiles

2019

J. Phys. B: At. Mol. Opt. Phys.

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This Ph.D. tutorial discusses ultra-long-range Rydberg molecules, the exotic bound states of a Rydberg atom and one or more ground state atoms immersed in the Rydberg electron's wave function. This novel chemical bond is distinct from an ionic or covalent bond, and is accomplished by a very different mechanism: the Rydberg electron, elastically scattering off of the ground state atoms, exerts a weak attractive force sufficient to form the molecule in long-range oscillatory potential wells. In the last decade this topic has burgeoned into a vibrant and mature subfield of atomic and molecular physics following the rapidly developing capability of experiment to observe and manipulate these molecules. This tutorial focuses on three areas where this experimental progress has demanded more sophisticated theoretical descriptions: the structure of polyatomic molecules, the influence of electronic and nuclear spin, and the behavior of these molecules in external fields. The main results are a collection of potential energy curves and electronic wave functions which together describe the physics of Rydberg molecules. Additionally, to facilitate future progress in this field, this tutorial provides a general overview of the current state of experiment and theory.

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Section: Discussionmentioning

confidence: 99%

Section: Polyatomic Rydberg Moleculesmentioning

confidence: 99%

Trilobites, butterflies, and other exotic specimens of long-range Rydberg molecules

Eiles

2019

J. Phys. B: At. Mol. Opt. Phys.

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“…Recent studies have focused on the interaction of one or more diatomic molecules with a Rydberg alkali-metal atom in dense samples where molecules are likely to be inside the orbit of the Rydberg electron [20,21]. In addition to fundamental studies on their collisional properties, these molecule-Rydberg atom systems have been proposed as novel tools for quantum state preparation [22,23].…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted binding of ultracold polar molecules with Rydberg atoms in the van der Waals regime

Olaya,

Pérez-Ríos,

Herrera

2021

Preprint

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We study ultracold long-range collisions of heteronuclear alkali-metal dimers with a reservoir gas of alkali-metal Rydberg atoms in a two-photon laser excitation scheme. In a low density regime where molecules remain outside the Rydberg orbits of the reservoir atoms, we show that the two-photon photoassociation (PA) of the atom-molecule pair into a long-range bound trimer state is efficient over a broad range of atomic Rydberg channels. As a case study, we obtain the PA lineshapes for the formation of trimers composed of KRb molecules in the rovibrational ground state and excited Rb atoms in the asymptotic Rydberg levels n 2 Sj and n 2 Dj, for n = 20 − 80. We predict atommolecule binding energies in the range 10 − 10 3 kHz for the first vibrational state below threshold. The average trimer formation rate is order 10 8 s −1 at 1.0 µK, and depends weakly on the principal quantum number n. Our results set the foundations for a broader understanding of exotic long range collisions of dilute molecules in ultracold atomic Rydberg reservoirs.

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“…Since then, interest in Rydberg excitations beyond isolated atoms has rapidly branched out into quite diverse scenarios. These include the replacement of the ground state atom in the original trilobite dimer by larger and more complex systems, e.g., one or more polar molecules [6][7][8][9], the (re-)discovery of Rydberg excitations in solid state systems [10], and a large variety of excitonic Rydberg dynamics in the gas phase [11][12][13], just to name a few. For the increasingly dense gases now achievable in experiments, one can elegantly describe this system as a Rydberg excitation dressed by ground state atoms from the gas.…”

Section: Introductionmentioning

confidence: 99%

Rydberg Composites

Hunter,

Eiles,

Eisfeld

et al. 2019

Preprint

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We introduce the Rydberg Composite, a new class of Rydberg matter where a single Rydberg atom is interfaced with a dense environment of neutral ground state atoms. The properties of the Composite depend on both the Rydberg excitation, which provides the gross energetic and spatial scales, and on the distribution of ground state atoms within the volume of the Rydberg wave function, which sculpt the electronic states. The latter range from the "trilobites," for small numbers of scatterers, to delocalized and chaotic eigenstates for disordered scatterer arrays, culminating in the dense scatterer limit in symmetry-dominated wave functions which promise good control in future experiments. We characterize these scenarios with different theoretical methods, enabling us to obtain scaling behavior for the regular spectrum and measures of chaos and delocalization in the disordered regime. Thus, we obtain a systematic description of the Composite states. The 2D monolayer Composite possesses the richest spectrum with an intricate band structure in the limit of homogeneous scatterers.

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Electronic structure of ultralong-range Rydberg penta-atomic molecules with two polar diatomic molecules

Cited by 7 publications

References 44 publications

Trilobites, butterflies, and other exotic specimens of long-range Rydberg molecules

Trilobites, butterflies, and other exotic specimens of long-range Rydberg molecules

Laser-assisted binding of ultracold polar molecules with Rydberg atoms in the van der Waals regime

Rydberg Composites

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