A High Phase-Space-Density Gas of Polar Molecules

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • K. K. Ni
  • S. Ospelkaus
  • M. H.G. De Miranda
  • A. Pe'er
  • B. Neyenhuis
  • J. J. Zirbel
  • S. Kotochigova
  • P. S. Julienne
  • D. S. Jin
  • J. Ye

Externe Organisationen

  • University of Colorado Boulder
  • Temple University
  • University of Maryland
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)231-235
Seitenumfang5
FachzeitschriftSCIENCE
Jahrgang322
Ausgabenummer5899
PublikationsstatusVeröffentlicht - 10 Okt. 2008
Extern publiziertJa

Abstract

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 ( 40K87Rb) 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 1012 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.

ASJC Scopus Sachgebiete

Zitieren

A High Phase-Space-Density Gas of Polar Molecules. / Ni, K. K.; Ospelkaus, S.; De Miranda, M. H.G. et al.
in: SCIENCE, Jahrgang 322, Nr. 5899, 10.10.2008, S. 231-235.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Ni, KK, Ospelkaus, S, De Miranda, MHG, Pe'er, A, Neyenhuis, B, Zirbel, JJ, Kotochigova, S, Julienne, PS, Jin, DS & Ye, J 2008, 'A High Phase-Space-Density Gas of Polar Molecules', SCIENCE, Jg. 322, Nr. 5899, S. 231-235. https://doi.org/10.1126/science.1163861
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, 322(5899), 231-235. https://doi.org/10.1126/science.1163861
Ni KK, Ospelkaus S, De Miranda MHG, Pe'er A, Neyenhuis B, Zirbel JJ et al. A High Phase-Space-Density Gas of Polar Molecules. SCIENCE. 2008 Okt 10;322(5899):231-235. doi: 10.1126/science.1163861
Ni, K. K. ; Ospelkaus, S. ; De Miranda, M. H.G. et al. / A High Phase-Space-Density Gas of Polar Molecules. in: SCIENCE. 2008 ; Jahrgang 322, Nr. 5899. S. 231-235.
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T1 - A High Phase-Space-Density Gas of Polar Molecules

AU - Ni, K. K.

AU - Ospelkaus, S.

AU - De Miranda, M. H.G.

AU - Pe'er, A.

AU - Neyenhuis, B.

AU - Zirbel, J. J.

AU - Kotochigova, S.

AU - Julienne, P. S.

AU - Jin, D. S.

AU - Ye, J.

PY - 2008/10/10

Y1 - 2008/10/10

N2 - 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 ( 40K87Rb) 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 1012 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.

AB - 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 ( 40K87Rb) 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 1012 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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