A High Phase-Space-Density Gas of Polar Molecules
Kang-Kuen Ni,Silke Ospelkaus,M. H. G. de Miranda,Avi Pe'er,Brian Neyenhuis,J. J. Zirbel,Svetlana Kotochigova,Paul S. Julienne,Deborah Jin,Jun Ye +9 more
Reads0
Chats0
TLDR
An ultracold dense gas of potassium-rubidium (40K87Rb) polar molecules is created using a single step of STIRAP with two-frequency laser irradiation to coherently transfer extremely weakly bound KRb molecules to the rovibrational ground state of either the triplet or the singlet electronic ground molecular potential.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 0052(2) Debye (1 Debye = 3336 × 10–30 coulomb-meters) for the triplet rovibrational ground state and 0566(17) Debye for the singlet rovibrational ground stateread more
Citations
More filters
Journal ArticleDOI
Feshbach resonances in ultracold gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Feshbach Resonances in Ultracold Gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Journal ArticleDOI
The physics of dipolar bosonic quantum gases
Thierry Lahaye,Thierry Lahaye,Thierry Lahaye,C. Menotti,Luis Santos,Maciej Lewenstein,Tilman Pfau +6 more
TL;DR: In this paper, a review of the recent theoretical and experimental advances in the study of ultra-cold gases made of bosonic particles interacting via the long-range, anisotropic dipole-dipole interaction, in addition to the short-range and isotropic contact interaction usually at work in ultracold gases is presented.
Journal ArticleDOI
Cold and ultracold molecules: science, technology and applications
TL;DR: A review of the current state of the art in the research field of cold and ultracold molecules can be found in this paper, where a discussion is based on recent experimental and theoretical work and concludes with a summary of anticipated future directions and open questions in rapidly expanding research field.
Journal ArticleDOI
Quantum simulations with ultracold atoms in optical lattices
TL;DR: In this article, the authors review recent experimental progress in quantum many-body simulation and comment on future directions, and present a review of the current state-of-the-art in this field.
References
More filters
Journal ArticleDOI
Quantum computation with trapped polar molecules
TL;DR: This design can plausibly lead to a quantum computer with greater, approximately > or = 10(4) qubits, which can perform approximately 10(5) CNOT gates in the anticipated decoherence time of approximately 5 s.
Journal ArticleDOI
Colloquium: Femtosecond optical frequency combs
Steven T. Cundiff,Jun Ye +1 more
TL;DR: In this paper, the authors review the frequency-domain description of a mode-locked laser and the connection between the pulse phase and the frequency spectrum in order to provide a basis for understanding how the absolute frequencies can be determined and controlled.
Journal ArticleDOI
Production of cold molecules via magnetically tunable Feshbach resonances
TL;DR: In this article, a review illustrates theoretical concepts of both the particular nature of the highly excited Feshbach molecules produced and the techniques for their association from unbound atom pairs, and their significance is illustrated for several experimental observations, such as binding energies and lifetimes with respect to collisional relaxation.
Journal ArticleDOI
Decelerating neutral dipolar molecules
TL;DR: In this paper, it was demonstrated that a beam of neutral dipolar molecules can be efficiently decelerated with a time-varying electric field, achieving a speed of 98 m/s.
Journal ArticleDOI
Magnetic trapping of calcium monohydride molecules at millikelvin temperatures
TL;DR: In this paper, the authors used Zeeman spectroscopy to determine the number of trapped molecules and their temperature, and set upper bounds on the cross-sectional areas of collisional relaxation processes.