Coherent Transfer of Photoassociated Molecules into the Rovibrational Ground State

Aikawa, K.; Akamatsu, Daisuke; Hayashi, Masato; Oasa, K.; Kobayashi, Jun; Naidon, Pascal; Kishimoto, T.; Ueda, Masahito; Inouye, S.

doi:10.1103/physrevlett.105.203001

Cited by 230 publications

(216 citation statements)

References 33 publications

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“…PA creates molecules in an electronically excited state, which quickly decay to high-lying vibrational levels of the lowest singlet (ground) and triplet electronic states. Transferring these molecules to the most deeply bound rovibrational a) adeelmala@gmail.com b) elliottd@purdue.edu * Present address: Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore -560080, India 2 ground-state levels, however, requires transfer pathways that may involve additional excitation steps to states that have a better wave function overlap with the rovibronic ground state [10,11].…”

Section: Introductionmentioning

confidence: 99%

Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy

Altaf

Dutta

Lorenz

et al. 2015

The Journal of Chemical Physics

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We report the formation of ultracold 7 Li 85 Rb molecules in the a 3 Σ + electronic state by photoassociation (PA) and their detection via resonantly enhanced multiphoton ionization (REMPI). With our dual-species Li and Rb magneto-optical trap (MOT) apparatus, we detect PA resonances with binding energies up to ~62 cm -1 below the 7 Li 2s 2 S 1/2 + 85 Rb 5p 2 P 1/2 asymptote. In addition, we use REMPI spectroscopy to probe the a 3  + state and excited electronic 3 3  and 4 3  + states, and identify a 3  + (v" = 7 -13), 3 3  (v  ' = 0 -10) and 4 3  + (v  ' = 0 -5) vibrational levels. Our line assignments agree well with ab initio calculations. These preliminary spectroscopic studies on previously unobserved electronic states are crucial to discovering transition pathways for transferring ultracold LiRb molecules created via PA to deeply bound rovibrational levels of the electronic ground state.

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Section: Introductionmentioning

confidence: 99%

Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy

Altaf

Dutta

Lorenz

et al. 2015

The Journal of Chemical Physics

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“…Recently a range of ultra-cold gases with appreciable magnetic [1][2][3][4] and electric [5,6] dipoles have been realized in experiments. The key feature of these gases is that the constituent particles interact via a dipole-dipole interaction (DDI) that is long-ranged and anisotropic.…”

Section: Introductionmentioning

confidence: 99%

Magnetostriction and exchange effects in trapped dipolar Bose and Fermi gases

Baillie¹,

Blakie²

2012

Phys. Rev. A

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We examine the magnetostrictive position and momentum space distortions that occur in harmonically confined dipolar Bose and Fermi gases. Direct interactions give rise to position space magnetostriction and exchange interactions give rise to momentum space magnetostriction. While the position space magnetostriction is similar in Bose and Fermi systems, the momentum space magnetostriction is markedly different: the Bose gas momentum distribution distorts in the opposite sense to that of the Fermi gas. By relating exchange effects to short range correlations between the particles we discuss the energetic origin of this difference. Our main calculations are based on Hartree-Fock theory, but we also provide analytic approximations for the magnetostriction effects at zero and finite temperature. Our predictions should be verifiable in current experiments with ultra-cold polar molecules.

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“…Recently, the polar molecules KRb and LiCs have been cooled to their electronic, rotational, and vibrational ground states [11][12][13][14], and KRb has been loaded into a threedimensional optical lattice [15]. This system can be used to implement lattice Hamiltonians based on rotational states of polar molecules [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

d-wave superfluidity in optical lattices of ultracold polar molecules

2011

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Recent work on ultracold polar molecules, governed by a generalization of the t-J Hamiltonian, suggests that molecules may be better suited than atoms for studying d-wave superfluidity due to stronger interactions and larger tunability of the system. We compute the phase diagram for polar molecules in a checkerboard lattice consisting of weakly coupled square plaquettes. In the simplest experimentally realizable case where there is only tunneling and an XX-type spin-spin interaction, we identify the parameter regime where d-wave superfluidity occurs. We also find that the inclusion of a density-density interaction destroys the superfluid phase and that the inclusion of a spin-density or an Ising-type spin-spin interaction can enhance the superfluid phase. We also propose schemes for experimentally realizing the perturbative calculations exhibiting enhanced d-wave superfluidity.

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Coherent Transfer of Photoassociated Molecules into the Rovibrational Ground State

Cited by 230 publications

References 33 publications

Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy

Formation of ultracold 7Li85Rb molecules in the lowest triplet electronic state by photoassociation and their detection by ionization spectroscopy

Magnetostriction and exchange effects in trapped dipolar Bose and Fermi gases

d-wave superfluidity in optical lattices of ultracold polar molecules

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