Extended Bose-Hubbard models with Rydberg macrodimer dressing

Barbier, Mathieu; Hollerith, Simon; Hofstetter, Walter

doi:10.1103/physreva.104.053304

Cited by 6 publications

(11 citation statements)

References 70 publications

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“…We anticipate an improvement by one order of magnitude in the dressing quality factor at unity Franck-Condon overlap. This can achieved using potentials at larger distances and principal quantum numbers [23]. Here, also motional states less because the vibrational wave packets carry less kinetic energy.…”

Section: (C))mentioning

confidence: 99%

“…1 (a). At the same time, long-distance tails are absent because the coupling to asymptotic pair potentials is negligibly small [3,23]. The width of the narrow interaction peaks is typically limited by the width of the ground state wave packet in the optical trap, which requires exquisite control over the motional states.…”

mentioning

confidence: 99%

“…We performed a two-photon and two-color excitation by modulating sidebands on our UV carrier frequency ω C , see Fig. 1 (c) [23]. The modulation frequency ω sb was sligthly below the interaction energy U 0 of the lowest vibrational state.…”

mentioning

confidence: 99%

“…The observed suppression of excitation rates for higher vibrational modes is explained by increasing detunings ∆ and smaller Franck-Condon integrals with the ground state wave packet. The two-color excitation scheme enables independent tunability of the intermediate-state detuning, the admixed scattering rates and the contributing light shifts [23]. Furthermore, it allowed us to strongly increase the coupling rates into the molecular states.…”

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confidence: 99%

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Realizing distance-selective interactions in a Rydberg-dressed atom array

Hollerith,

Srakaew,

Wei

et al. 2021

Preprint

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Measurement-based quantum computing relies on the rapid creation of large-scale entanglement in a register of stable qubits. Atomic arrays are well suited to store quantum information, and entanglement can be created using highly-excited Rydberg states. Typically, isolating pairs during gate operation is difficult because Rydberg interactions feature long tails at large distances. Here, we engineer distance-selective interactions that are strongly peaked in distance through off-resonant laser coupling of molecular potentials between Rydberg atom pairs. Employing quantum gas microscopy, we verify the dressed interactions by observing correlated phase evolution using many-body Ramsey interferometry. We identify atom loss and coupling to continuum modes as a limitation of our present scheme and outline paths to mitigate these effects, paving the way towards the creation of large-scale entanglement.

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confidence: 99%

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confidence: 99%

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Realizing distance-selective interactions in a Rydberg-dressed atom array

Hollerith,

Srakaew,

Wei

et al. 2021

Preprint

Self Cite

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“…Quantum simulators can be constructed using various particles including Rydberg atoms [72,73], ultracold ions [26], and molecules [74,75]. A new species has joined the toolbox with the realization of the Bose-Einstein condensate in chromium, dysprosium, and erbium gases [76][77][78].…”

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confidence: 99%

Two ultracold highly magnetic atoms in a one-dimensional harmonic trap

Suchorowski¹,

Dawid²,

Tomza³

2022

Preprint

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We theoretically investigate the properties of two interacting ultracold highly magnetic atoms trapped in a one-dimensional harmonic potential. The atoms interact via an anisotropic long-range dipole-dipole interaction, which in one dimension effectively can be modeled by the contact interaction. We investigate the interplay of the external magnetic field, spin-spin interaction, and trapping potential and how they affect the magnetization of the system. We show the role of indistinguishability and symmetries in the dynamics by studying the time evolution of the observables that could be measured experimentally. The presented model may depict the on-site interaction of the extended Hubbard models, therefore giving a better understanding of the fundamental building block of the respective many-body quantum simulators.

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Rydberg Macrodimers: Diatomic Molecules on the Micrometer Scale

Hollerith

Zeiher

2023

J. Phys. Chem. A

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Controlling molecular binding at the level of single atoms is one of the holy grails of quantum chemistry. Rydberg macrodimersbound states between highly excited Rydberg atomsprovide a novel perspective in this direction. Resulting from binding potentials formed by the strong, long-range interactions of Rydberg states, Rydberg macrodimers feature bond lengths in the micrometer regime, exceeding those of conventional molecules by orders of magnitude. Using single-atom control in quantum gas microscopes, the unique properties of these exotic states can be studied with unprecedented control, including the response to magnetic fields or the polarization of light in their photoassociation. The high accuracy achieved in spectroscopic studies of macrodimers makes them an ideal testbed to benchmark Rydberg interactions, with direct relevance to quantum computing and information protocols where these are employed. This review provides a historic overview and summarizes the recent findings in the field of Rydberg macrodimers. Furthermore, it presents new data on interactions between macrodimers, leading to a phenomenon analogous to Rydberg blockade at the level of molecules, opening the path toward studying many-body systems of ultralong-range Rydberg molecules.

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Extended Bose-Hubbard models with Rydberg macrodimer dressing

Cited by 6 publications

References 70 publications

Realizing distance-selective interactions in a Rydberg-dressed atom array

Realizing distance-selective interactions in a Rydberg-dressed atom array

Two ultracold highly magnetic atoms in a one-dimensional harmonic trap

Rydberg Macrodimers: Diatomic Molecules on the Micrometer Scale

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