Ultralong-Range Rydberg Bimolecules

González‐Férez, Rosario; Shertzer, J.; Sadeghpour, H. R.

doi:10.1103/physrevlett.126.043401

Cited by 9 publications

(3 citation statements)

References 64 publications

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“…These observations represent essential input for future studies of dipole-bound states of Rydberg atoms and polar ground-state molecules, and for the implementation of proposed schemes for coherent control, cooling, and sensing in this hybrid system [19][20][21][22]. Investigations of effects of higher-order multipole interactions [37], and Rydbergelectron scattering from NH 3 [38,39] will be valuable in achieving a more nuanced interpretation of the data.…”

Section: Discussionmentioning

confidence: 99%

Probing van der Waals interactions and detecting polar molecules by Förster-resonance energy transfer with Rydberg atoms at temperatures below 100 mK

Zou

Hogan²

2022

Phys. Rev. A

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Electric-field-controlled Förster-resonance energy transfer (FRET) between Rydberg helium (He) atoms and ground-state ammonia (NH 3 ) molecules has been studied at translational temperatures below 100 mK. The experiments were performed in an intrabeam collision apparatus with pulsed supersonic beams of NH 3 seeded in He. A range of Förster resonances, between triplet Rydberg states in He with principal quantum numbers of 38, 39, and 40, and the inversion intervals in NH 3 were investigated. Resonance widths as low as 100 ± 20 MHz were observed for Rydberg-Rydberg transitions with electric dipole transition moments of 3270 D. These widths result from binary collisions at a mean center-of-mass speed of 19.3 ± 2.6 m/s. For transitions in which the initially prepared Rydberg states were strongly polarized, with large induced static electric dipole moments, van der Waals interactions between the collision partners increased the resonance widths to ∼750 MHz. From measurements of the rate of FRET for the narrowest resonances observed, a density of NH 3 of (9.4 ± 0.3) × 10 9 cm −3 in the upper ground-state inversion sublevel in the interaction region of the apparatus was determined nondestructively.

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Section: Discussionmentioning

confidence: 99%

Probing van der Waals interactions and detecting polar molecules by Förster-resonance energy transfer with Rydberg atoms at temperatures below 100 mK

Zou

Hogan²

2022

Phys. Rev. A

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“…[7][8][9][10] In this setting the Rydberg electron shields the reaction centre from stray electric fields that would otherwise cause heating. Long-lived Rydberg states of small molecules also offer opportunities for studies of low-energy molecular scattering that are dominated at long range by resonant dipole-dipole interactions, 11 and the exploration of the chemistry associated with ultra-long range Rydberg molecules, 12 formed of a Rydberg atom or molecule bound to a ground-state atom or molecule through low-energy Rydberg-electron scattering. 13,14 They are also important in tests of molecular quantum mechanics and quantum chemistry, for example, through the precise determination of ionisation and dissociation energies.…”

Section: Introductionmentioning

confidence: 99%

Quantum-state-dependent decay rates of electrostatically trapped Rydberg NO molecules

Rayment

Hogan

2021

Phys. Chem. Chem. Phys.

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“…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]. The formation of Rydberg bimolecules with binding energies in the GHz regime and kilo-Debye permanent dipole moments, has also been predicted [24]. Bimolecules are formed by the interaction of a low-energy diatomic molecule with the outer electron of a Rydberg molecule, also at high gas densities.…”

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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Ultralong-Range Rydberg Bimolecules

Cited by 9 publications

References 64 publications

Probing van der Waals interactions and detecting polar molecules by Förster-resonance energy transfer with Rydberg atoms at temperatures below 100 mK

Probing van der Waals interactions and detecting polar molecules by Förster-resonance energy transfer with Rydberg atoms at temperatures below 100 mK

Quantum-state-dependent decay rates of electrostatically trapped Rydberg NO molecules

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

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