Creation of ultracold Sr(2) molecules in the electronic ground state.

  title={Creation of ultracold Sr(2) molecules in the electronic ground state.},
  author={Simon Stellmer and Benjamin Pasquiou and R. Grimm and Florian Schreck},
  journal={Physical review letters},
  volume={109 11},
We report on the creation of ultracold (84)Sr(2) molecules in the electronic ground state. The molecules are formed from atom pairs on sites of an optical lattice using stimulated Raman adiabatic passage (STIRAP). We achieve a transfer efficiency of 30% and obtain 4×10(4) molecules with full control over the external and internal quantum state. STIRAP is performed near the narrow (1)S(0)-(3)P(1) intercombination transition, using a vibrational level of the 1(0(u)(+)) potential as an… 

Figures and Tables from this paper

Ultracold 88Sr2 molecules in the absolute ground state
We report efficient all-optical creation of an ultracold gas of alkaline-earth-metal dimers, 88Sr2, in their absolute ground state. Starting with weakly bound singlet molecules formed by narrow-line
Production of ultracold 85Rb133Cs molecules in the lowest ground state via the B1Π1 short-range state.
The B1Π1 (v = 3) state is found to have the maximum production rate for ground-state molecules with a value of 3(1) × 104 s-1, which is 3 times larger than the value via the previously studied 23Π0+ ( v = 10, J = 0) state with two-photon cascade decay.
Creation of ultracold polar ground-state RbCs molecules
This thesis reports the creation and trapping of 87RbCs molecules in the absolute ground state with a temperature of 1 uK. We build a tunable narrow-linewidth laser system at 1550 nm and 980 nm,
Transition Dipole Moment Measurements of Ultracold Photoassociated 85 Rb 133 Cs Molecules by Depletion Spectroscopy
(Received 6 July 2018) The transition dipole moments (TDMs) of ultracold RbCs molecules between the lowest vibrational ground level, XΣ (v = 0, J = 1), and the two excited rovibrational levels, 2Π0+
Two-photon photoassociation spectroscopy of the Σ+2 YbLi molecular ground state
We report on measurements of the binding energies of several weakly bound vibrational states of the paramagnetic $^{174}$Yb$^{6}$Li molecule in the electronic ground state using two-photon
Production of ultracold Cs*Yb molecules by photoassociation
We report the production of ultracold heteronuclear Cs∗ Yb molecules through one-photon photoassociation applied to an ultracold atomic mixture of Cs and Yb confined in an optical dipole trap. We
Spectroscopy of Cold LiCa Molecules Formed on Helium Nanodroplets
The results demonstrate that the helium droplet isolation approach is a powerful method for the characterization of tailor-made alkali–alkaline earth molecules and important contributions can be made to the search for optimal pathways toward the creation of ultracold alkali-alkalineearth ground state molecules from the corresponding atomic species.
Laser control of ultracold molecule formation: The case of RbSr
We have studied the formation of ultracold RbSr molecules with laser pulses. After discussing the advantages of the Mott insulator phase for the control with pulses, we present two classes of
Observation of Bose-enhanced photoassociation products
We produce ${^{84}\mathrm{Sr}_2}$ molecules using Bose-enhanced Raman photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP) technique on a Bose-Einstein condensate (BEC) to
Proposal for the formation of ultracold deeply bound RbSr dipolar molecules by all-optical methods
Ultracold paramagnetic and polar diatomic molecules are among the promising systems for quantum simulation of lattice-spin models. Unfortunately, their experimental observation is still challenging.


  • Rev. Lett. 95, 063202
  • 2005
  • Rev. Phys. Chem. 52, 763
  • 2001
  • Rev. Lett. 103, 200401
  • 2009
  • Rev. Lett. 105, 153201
  • 2010
  • Rev. A 84, 062114
  • 2011
  • Rev. A 48, 546
  • 1993
  • Phys. J. D 57, 171
  • 2010
Nature 441
  • 853
  • 2006
  • Rev. A 65, 063619
  • 2002
  • Rev. A 79, 061403
  • 2009