K
Kang-Kuen Ni
Researcher at Harvard University
Publications - 86
Citations - 6238
Kang-Kuen Ni is an academic researcher from Harvard University. The author has contributed to research in topics: Ground state & Excited state. The author has an hindex of 28, co-authored 80 publications receiving 4780 citations. Previous affiliations of Kang-Kuen Ni include University of Colorado Boulder & California Institute of Technology.
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Journal ArticleDOI
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
TL;DR: 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.
Journal ArticleDOI
Quantum-State Controlled Chemical Reactions of Ultracold Potassium-Rubidium Molecules
Silke Ospelkaus,Kang-Kuen Ni,Dajun Wang,M. H. G. de Miranda,Brian Neyenhuis,Goulven Quéméner,Paul S. Julienne,John L. Bohn,Deborah Jin,Jun Ye +9 more
TL;DR: Experimental evidence for exothermic atom-exchange chemical reactions is reported, starting with an optically trapped near–quantum-degenerate gas of polar 40K87Rb molecules prepared in their absolute ground state.
Journal ArticleDOI
Dipolar collisions of polar molecules in the quantum regime
Kang-Kuen Ni,Silke Ospelkaus,Silke Ospelkaus,Dajun Wang,Goulven Quéméner,Brian Neyenhuis,M. H. G. de Miranda,John L. Bohn,Jun Ye,Deborah Jin +9 more
TL;DR: It is shown how the long-range dipolar interaction can be used for electric-field control of chemical reaction rates in an ultracold gas of polar molecules, and how this dependence can be understood in a relatively simple model based on quantum threshold laws for the scattering of fermionic polar molecules.
Journal ArticleDOI
An Optical Tweezer Array of Ultracold Molecules
Loic Anderegg,Loic Anderegg,Lawrence Cheuk,Lawrence Cheuk,Yicheng Bao,Yicheng Bao,Sean Burchesky,Sean Burchesky,Wolfgang Ketterle,Kang-Kuen Ni,Kang-Kuen Ni,John M. Doyle,John M. Doyle +12 more
TL;DR: In this paper, an optical tweezer array of laser-cooled calcium monofluoride molecules has been used to study ground-state collisions of ultracold molecules in the presence and absence of near-resonant light.
Journal ArticleDOI
Efficient state transfer in an ultracold dense gas of heteronuclear molecules
Silke Ospelkaus,Avi Pe'er,Kang-Kuen Ni,J. J. Zirbel,Brian Neyenhuis,Svetlana Kotochigova,Paul S. Julienne,Jun Ye,Deborah Jin +8 more
TL;DR: In this article, the authors demonstrate the efficient transfer of loosely bound heteronuclear molecules into more deeply bound energy levels, indicating a route towards producing dense ensembles of cold polar molecules.