arXiv:1810.00536 · Physical Review A

Antiferromagnetic interorbital spin-exchange interaction of Yb171

Koki Ono, Jun Kobayashi, Yoshiki Amano, Koji Sato, Yoshiro Takahashi

Published Mar 13, 2019• 38 citations

Abstract

We report on the investigation of the scattering properties between the ground state $^{1}S_{0}$ and the metastable state $^{3}P_{0}$ of the fermionic isotope of $^{171}\mathrm{Yb}$. We measure the $s$-wave scattering lengths in the two-orbital collision channels as ${a}_{eg}^{+}=225(13){a}_{0}$ and ${a}_{eg}^{\ensuremath{-}}=355(6){a}_{0}$, using clock transition spectroscopy in a three-dimensional optical lattice. The results show that the interorbital spin-exchange interaction is antiferromagnetic, indicating that $^{171}\mathrm{Yb}$ is a promising isotope for the quantum simulation of the Kondo effect with the two-orbital system.

DOI: 10.1103/physreva.99.032707

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arXiv:1810.00536 · Physical Review A

Antiferromagnetic interorbital spin-exchange interaction of Yb171

Koki Ono, Jun Kobayashi, Yoshiki Amano, Koji Sato, Yoshiro Takahashi

Published Mar 13, 2019• 38 citations

arXiv HTML PDF

Abstract

We report on the investigation of the scattering properties between the ground state

^{1}S_{0}

and the metastable state

^{3}P_{0}

of the fermionic isotope of

^{171}\mathrm{Yb}

. We measure the

s

-wave scattering lengths in the two-orbital collision channels as

{a}_{eg}^{+}=225(13){a}_{0}

and

{a}_{eg}^{\ensuremath{-}}=355(6){a}_{0}

, using clock transition spectroscopy in a three-dimensional optical lattice. The results show that the interorbital spin-exchange interaction is antiferromagnetic, indicating that

^{171}\mathrm{Yb}

is a promising isotope for the quantum simulation of the Kondo effect with the two-orbital system.

DOI: 10.1103/physreva.99.032707

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B. Abeln, Koen Sponselee, M. Diem +3 more

We characterize interisotope interorbital interactions between atoms in the $^{1}S_{0}$ ground state and the $^{3}P_{0}$ metastable state in interacting Fermi-Fermi mixtures of $^{171}\mathrm{Yb}$ and $^{173}\mathrm{Yb}$ . We perform high-precision clock spectroscopy to measure interaction-induced energy shifts in a deep three-dimensional optical lattice and determine the corresponding scattering lengths. We find the elastic interaction of the interisotope mixtures $^{173}\mathrm{Yb}_{\mathrm{e}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{g}}$ and $^{173}\mathrm{Yb}_{\mathrm{g}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{e}}$ to be weakly attractive and very similar, while the corresponding two-body decay coefficients differ by more than two orders of magnitude. By comparing different spin mixtures we experimentally demonstrate the $\mathrm{SU}(2)\ensuremath{\bigotimes}\mathrm{SU}(6)$ symmetry of the elastic interactions. Furthermore, we measure the interorbital spin-exchange interaction in $^{171}\mathrm{Yb}$ and confirm its previously observed antiferromagnetic nature.We characterize interisotope interorbital interactions between atoms in the $^{1}S_{0}$ ground state and the $^{3}P_{0}$ metastable state in interacting Fermi-Fermi mixtures of $^{171}\mathrm{Yb}$ and $^{173}\mathrm{Yb}$. We perform high-precision clock spectroscopy to measure interaction-induced energy shifts in a deep three-dimensional optical lattice and determine the corresponding scattering lengths. We find the elastic interaction of the interisotope mixtures $^{173}\mathrm{Yb}_{\mathrm{e}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{g}}$ and $^{173}\mathrm{Yb}_{\mathrm{g}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{e}}$ to be weakly attractive and very similar, while the corresponding two-body decay coefficients differ by more than two orders of magnitude. By comparing different spin mixtures we experimentally demonstrate the $\mathrm{SU}(2)\ensuremath{\bigotimes}\mathrm{SU}(6)$ symmetry of the elastic interactions. Furthermore, we measure the interorbital spin-exchange interaction in $^{171}\mathrm{Yb}$ and confirm its previously observed antiferromagnetic nature.

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Direct Observation of Coherent Interorbital Spin-Exchange Dynamics

Giacomo Cappellini, M. Mancini, Guido Pagano +11 more

arXiv:1406.6642Physical Review LettersSep 15, 2014178 citations

We report on the investigation of the scattering properties between the ground state

^{1}S_{0}

and the metastable state

^{3}P_{0}

of the fermionic isotope of

^{171}\mathrm{Yb}

. We measure the

s

-wave scattering lengths in the two-orbital collision channels as

{a}_{eg}^{+}=225(13){a}_{0}

and

{a}_{eg}^{\ensuremath{-}}=355(6){a}_{0}

, using clock transition spectroscopy in a three-dimensional optical lattice. The results show that the interorbital spin-exchange interaction is antiferromagnetic, indicating that

^{171}\mathrm{Yb}

is a promising isotope for the quantum simulation of the Kondo effect with the two-orbital system.

We characterize interisotope interorbital interactions between atoms in the

^{1}S_{0}

ground state and the

^{3}P_{0}

metastable state in interacting Fermi-Fermi mixtures of

^{171}\mathrm{Yb}

and

^{173}\mathrm{Yb}

. We perform high-precision clock spectroscopy to measure interaction-induced energy shifts in a deep three-dimensional optical lattice and determine the corresponding scattering lengths. We find the elastic interaction of the interisotope mixtures $^{173}\mathrm{Yb}_{\mathrm{e}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{g}}$ and $^{173}\mathrm{Yb}_{\mathrm{g}}\text{\ensuremath{-}}^{171}\mathrm{Yb}_{\mathrm{e}}$ to be weakly attractive and very similar, while the corresponding two-body decay coefficients differ by more than two orders of magnitude. By comparing different spin mixtures we experimentally demonstrate the $\mathrm{SU}(2)\ensuremath{\bigotimes}\mathrm{SU}(6)$ symmetry of the elastic interactions. Furthermore, we measure the interorbital spin-exchange interaction in

^{171}\mathrm{Yb}

and confirm its previously observed antiferromagnetic nature.

We report on the observation of the spin-exchange dynamics of

^{171}\mathrm{Yb}

atoms in the ground state

{}^{1}{S}_{0}

and in the metastable state

{}^{3}{P}_{0}

. We implement the mixed-dimensional two-orbital system using near-resonant and magic-wavelength optical lattices, where the

{}^{1}{S}_{0}

and

{}^{3}{P}_{0}

atoms are itinerant in a one-dimensional tube and localized in three dimensions, respectively. By exploiting an optical Stern-Gerlach method, we observe the spin depolarization of the

{}^{1}{S}_{0}

atoms induced by the spin-exchange interaction with the

{}^{3}{P}_{0}

atom. Our work could pave the way to the quantum simulation of the Kondo effect.