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A High Phase-Space-Density Gas of Polar Molecules
Open accessAbstract
A quantum gas of ultracold polar molecules, with long-range and anisotropic interactions, not only would enable explorations of a large class of many-body physics phenomena but also could be used for quantum information processing. We report on the creation of an ultracold dense gas of potassium-rubidium ( 40 K 87 Rb) polar molecules. Using a single step of STIRAP (stimulated Raman adiabatic passage) with two-frequency laser irradiation, we coherently transfer extremely weakly bound KRb molecules to the rovibrational ground state of either the triplet or the singlet electronic ground molecular potential. The polar molecular gas has a peak density of 10 12 per cubic centimeter and an expansion-determined translational temperature of 350 nanokelvin. The polar molecules have a permanent electric dipole moment, which we measure with Stark spectroscopy to be 0.052(2) Debye (1 Debye = 3.336 × 10 –30 coulomb-meters) for the triplet rovibrational ground state and 0.566(17) Debye for the singlet rovibrational ground state.
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Citations
Cited by
Quantum simulations with ultracold atoms in optical lattices
Gross, C., & Bloch, I. (2017) · Science · doi:10.1126/science.aal3837 · Cited by 1,527
Quantum simulation of antiferromagnetic spin chains in an optical lattice
Simon, J., Bakr, W. S., Ma, R., Tai, M. E., Preiss, P. M., & Greiner, M. (2011) · Nature · doi:10.1038/nature09994 · Cited by 898
Tools for quantum simulation with ultracold atoms in optical lattices
Schäfer, F., Fukuhara, T., Sugawa, S., Takasu, Y., & Takahashi, Y. (2020) · Nature Reviews Physics · doi:10.1038/s42254-020-0195-3 · Cited by 488
Quantum phases from competing short- and long-range interactions in an optical lattice
Landig, R., Hruby, L., Dogra, N., Landini, M., Mottl, R., Donner, T., & Esslinger, T. (2016) · Nature · doi:10.1038/nature17409 · Cited by 445
Cavity QED in a molecular ion trap
Schuster, D. I., Bishop, L. S., Chuang, I. L., DeMille, D., & Schoelkopf, R. J. (2011) · Physical Review A · doi:10.1103/physreva.83.012311 · Cited by 61
Metadata
- Authors
- Ni, K.-K., Ospelkaus, S., de Miranda, M. H. G., Pe'er, A., Neyenhuis, B., Zirbel, J. J., Kotochigova, S., Julienne, P. S., Jin, D. S., & Ye, J.
- Venue
- Science
- Published
- 2008-10-10
- Volume
- 322
- Issue
- 5899
- Pages
- 231-235
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2054096257
- Cited by
- 1,810
- References
- 0
- FWCI
- 92.62
- Type
- journal article
- Language
- en
- Open access
- green
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- Ni, K.-K., Ospelkaus, S., de Miranda, M. H. G., Pe'er, A., Neyenhuis, B., Zirbel, J. J., Kotochigova, S., Julienne, P. S., Jin, D. S., & Ye, J. (2008). A High Phase-Space-Density Gas of Polar Molecules. Science. https://doi.org/10.1126/science.1163861
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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