Hyperfine-Structure-Induced Purely Long-Range Molecules

Enomoto, Kazuki; Kitagawa, M.; Tojo, Satoshi; Takahashi, Yoshiro

doi:10.1103/physrevlett.100.123001

Cited by 27 publications

(41 citation statements)

References 28 publications

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“…When the spectrum is dominated by the features due to the ground state d-wave, the intensity ratio of the J e = 3 and J e = 1 features should be 3/2 from Eq. (14). Such d-wave doublets in 174 Yb were observed by Tojo et al [13], who found that the transition to the bound state with J e = 3 can be stronger than the transition to J e = 1 at relatively low collisions energies corresponding to a temperature of about 25 µK, what can be explained by our model.…”

Section: Isotopic Variation Of Photoassociation Spectrasupporting

confidence: 64%

“…Our models of the interaction potentials can be used to predict the magnitude of the optical lengths in Eq. (6) for the set of optical Feshbach resonances corresponding to the photoassociation lines of the different Yb bosonic isotopes (fermionic isotopes are more complicated because of hyperfine structure in the excited state [14]). Figure 7 shows our calculated optical lengths for the homonuclear bosonic isotopes of Yb.…”

Section: Isotopic Variation Of Photoassociation Spectramentioning

confidence: 99%

“…Quantum degenerate gases have been obtained for the bosonic isotopes 174 Yb [8], 170 Yb [9], and 176 Yb [10], and the fermionic isotopes 171 Yb and 173 Yb [11]. Photoassociation spectroscopy has been carried out for bosons [12,13] as well as fermions [14]. A two-color photoassociation experiment has allowed a precise determination of the ground state s-wave scattering lengths for all combinations of Yb isotopes [15].…”

Section: Introductionmentioning

confidence: 99%

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Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Borkowski¹,

Ciuryło²,

Julienne

et al. 2009

Phys. Rev. A

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The properties of bosonic Ytterbium photoassociation spectra near the intercombination transition 1 S0-3 P1 are studied theoretically at ultra low temperatures. We demonstrate how the shapes and intensities of rotational components of optical Feshbach resonances are affected by mass tuning of the scattering properties of the two colliding ground state atoms. Particular attention is given to the relationship between the magnitude of the scattering length and the occurrence of shape resonances in higher partial waves of the van der Waals system. We develop a mass scaled model of the excited state potential that represents the experimental data for different isotopes. The shape of the rotational photoassociation spectrum for various bosonic Yb isotopes can be qualitatively different.

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Section: Isotopic Variation Of Photoassociation Spectrasupporting

confidence: 64%

Section: Isotopic Variation Of Photoassociation Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Borkowski¹,

Ciuryło²,

Julienne

et al. 2009

Phys. Rev. A

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“…The upper binding potential supports as many as 8 bound states. Without cavity coupling the binding energies match well with the reported free space values [36]. We have found that with strong coupling they do not change appreciably.…”

Section: Resultssupporting

confidence: 87%

“…[52] and C 6 = 2810 a.u. [36] for molecular potentials asymptotically corresponding to 1 S 0 + Figure 4. Asymptote potentials of one-photon (i) and two-photon (ii) sector.…”

Section: Resultsmentioning

confidence: 99%

Manipulating nanoscale atom–atom interactions with cavity QED

Pal

Saha

Deb

2016

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

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Abstract. We theoretically explore manipulation of interactions between excited and ground state atoms at nanoscale separations by cavity quantum electrodynamics (CQED). We develop an adiabatic molecular dressed state formalism and show that it is possible to generate Fano-Feshbach resonances between ground and long-lived excited-state atoms inside a cavity. The resonances are shown to arise due to nonadiabatic coupling near a pseudo-crossing between the dressed state potentials. We illustrate our results with a model study using fermionic 171 Yb atoms in a two-modal cavity. Our study is important for manipulation of interatomic interactions at low energy by cavity field.

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Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

Tecmer

Boguslawski

Borkowski

et al. 2019

Int J of Quantum Chemistry

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We present a comprehensive theoretical study of the electronic structures of the Yb atom and the Yb 2 molecule, respectively, focusing on their ground and lowest-lying electronically excited states. Our study includes various state-of-the-art quantum chemistry methods such as CCSD, CCSD(T), CASPT2 (including spin-orbit coupling), and EOM-CCSD as well as some recently developed pCCD-based approaches and their extensions to target excited states. Specifically, we scan the lowest-lying potential energy surfaces of the Yb 2 dimer and provide a reliable benchmark set of spectroscopic parameters including optimal bond lengths, vibrational frequencies, potential energy depths, and adiabatic excitation energies. Our in-depth analysis unravels the complex nature of the electronic spectrum of Yb 2 , which is difficult to model accurately by any conventional quantum chemistry method. Finally, we scrutinize the biexcited character of the first 1 Σ + g excited state and its evolution along the potential energy surface. K E Y W O R D S relativistic effects, electron corellation effects, spin-orbit coupling, equation of motion coupled cluster, CASPT2 | INTRODUCTIONThe divalent ytterbium atom has in recent years garnered significant attention thanks to its many uses in cold atom physics. It has a nonmagnetic 1 S 0 ground state and several useful optical transitions: the strong 1 S 0 $ 1 P 1 line can be used for Zeeman slowing, whereas the narrow (181 kHz) intercombination 1 S 0 $ 3 P 1 line can be used to directly laser cool Yb atoms to microkelvin temperatures. [1] Yb has seven stable isotopes: two fermions (171 and 173 with nuclear spins of 1/2 and 5/2, respectively) and five bosons (168, 170, 172, 174, and 176) that lack nuclear spin. The rich isotope structure makes it possible to mass-tune the atomic interactions [2] and facilitates a wide array of possible quantum-degenerate gases. [3][4][5][6] The doubly forbidden 1 S 0 $ 3 P 0 transition lies at the heart of optical atomic clocks [7] that are among the most precise physical instruments known to mankind. For example, an ytterbium clock has recently been demonstrated to enable geopotential measurements with an accuracy below a centimeter. [8] The long-lived 3 P 0 clock states also find use in quantum simulations using Yb atoms. [9] The long-range interactions in the Yb dimer have been probed extensively by high-resolution photoassociation spectroscopy (PAS) [10] near the narrow 1 S 0 $ 3 P 1 intercombination line. The excited 1 S 0 + 3 P 1 (0 + u ) [11,12] state has been probed by single color PAS and provided the van der Waals C 6 coefficient and an improved value of the atomic 3 P 1 lifetime. Two-color PAS of ground state 0 + g vibrational levels [2,13] delivered accurate

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Hyperfine-Structure-Induced Purely Long-Range Molecules

Cited by 27 publications

References 28 publications

Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Line shapes of optical Feshbach resonances near the intercombination transition of bosonic ytterbium

Manipulating nanoscale atom–atom interactions with cavity QED

Modeling the electronic structures of the ground and excited states of the ytterbium atom and the ytterbium dimer: A modern quantum chemistry perspective

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