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.
Papers
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Motional-ground-state cooling outside the Lamb-Dicke regime
TL;DR: In this article, a single sodium atom is cooled to its 3D motional ground state in an optical tweezer, achieving a ground state population of 81(4)% after 100 ms of cooling.
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Eliminating light shifts in single-atom optical traps
TL;DR: In this article, a general solution to the light shifts of atomic levels from the trapping potential in these systems can result in detrimental effects such as fluctuating dipole force heating, inhomogeneous detunings, and inhibition of laser cooling, which limits the atomic species that can be manipulated.
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State-specific detection of trapped HfF+ by photodissociation
Kang-Kuen Ni,Kang-Kuen Ni,Huanqian Loh,Huanqian Loh,Matt Grau,Matt Grau,Kevin C. Cossel,Kevin C. Cossel,Jun Ye,Jun Ye,Eric A. Cornell,Eric A. Cornell +11 more
TL;DR: In this paper, the population in individual rovibronic states of trapped HfF+ with a single-shot absolute efficiency of 18% was detected by resonanceenhanced multiphoton photodissociation (REMPD).
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Rotational Coherence Times of Polar Molecules in Optical Tweezers.
Sean Burchesky,Sean Burchesky,Loic Anderegg,Loic Anderegg,Yicheng Bao,Yicheng Bao,Scarlett S. Yu,Scarlett S. Yu,Eunmi Chae,Wolfgang Ketterle,Kang-Kuen Ni,Kang-Kuen Ni,John M. Doyle,John M. Doyle +13 more
TL;DR: In this paper, the rotational coherence time of laser-cooled CaF molecules in optical tweezer traps was investigated and it was shown that a single spin-echo pulse is able to extend the coherence times to nearly half a second.
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Eliminating light shifts for single atom trapping
TL;DR: In this article, the authors present a general solution to prevent loading into optical tweezers directly from a magneto-optical trap by loading, as well as cooling and imaging the atoms with temporally alternating beams.