Ni, Kang-Kuen - Harvard University - Department of Chemistry and Chemical Biology

个人简介

Kang-Kuen is an assistant professor at the Department of Chemistry and Chemical Biology at Harvard and a member of the Harvard-MIT Center for Ultracold Atoms. Before joining Harvard in the summer of 2013, she was a National Research Council postdoctoral fellow at JILA, where she also obtained her PhD. Awards and Honors 2016 Packard Fellowship for Science and Technology 2015 Beckman Young Investigator Award 2015 Sloan Research Fellowship in Physics 2015 AFOSR YIP recipient 2014 OCPA Outstanding Young Researcher Award (Macronix Prize) 2011 NRC postdoctoral fellowship (NIST, Boulder) 2010 APS Division of Atomic, Molecular, and Optical Physics thesis prize 2009 CPI postdoctoral fellowship (Caltech) 2004 NSF Graduate Fellowship

研究领域

Our group is working to create molecules at the lowest possible temperatures, and to study their chemical reactions and physical interactions. At such ultra-cold temperatures quantum mechanics describes all aspects of the molecules: their position, orientation, and internal state. In this fascinating regime, new quantum phases emerge, beyond the usual gas, liquid, and solid phase, and even Bose-Einstein condensation. These phases are the subject of many theoretical studies, and now await laboratory demonstration. At ultra-cold temperatures, chemistry is also fully quantum mechanical, and unusual four-center reactions may dominate chemical dynamics. We are embarking to map out this strange new world of ultra-cold quantum chemistry and ultra-cold molecules. The unique properties of molecules also open new research opportunities for quantum information science.

近期论文

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K.-K. Ni, T. Rosenband, D. D. Grimes Dipolar exchange quantum logic gate with polar molecules. T. Rosenband, D. D. Grimes, K.-K. Ni Elliptical polarization for molecular Stark shift compensation in deep optical traps. L. R. Liu, J. D. Hood, Y. Yu, J. T. Zhang, N. R. Hutzler, T. Rosenband, K.-K. Ni Building one molecule from a reservoir of two atoms. Science 360, 900 (2018) Y. Yu, N. R. Hutzler, J. T. Zhang, L. R. Liu, T. Rosenband, K.-K. Ni Motional Ground State Cooling Outside the Lamb-Dickes Regime. L. R. Liu, J. T. Zhang, Y. Yu, N. R. Hutzler, Y. Liu, T. Rosenband, K.-K. Ni Ultracold Molecular Assembly. arXiv:1701.03121(2017) W. G. Tobias, J. S. Rosenberg, N. R. Hutzler, K.-K. Ni A low-temperature external cavity diode laser for broad wavelength tuning. Rev. Sci. Instrum. 87, 113104 (2016); arXiv:1607.01347(2016) N. R. Hutzler, L. R. Liu, Y. Yu, K.-K. Ni. Eliminating light shifts for single atom trapping. New J. of Phys.19, 023007 (2017); arXiv:1605.09422 (2016) K.-K. Ni, H. Loh, M. C. Grau, K. C. Cossel, J. Ye, E. A. Cornell. State-specific detection of trapped HfF+ by photodissociation. J. Mol. Spec. 300, 12, 2014 H. Loh, K. C. Cossel, M. C. Grau, K.-K. Ni, E. R. Meyer, J. L. Bohn, J. Ye, E. A. Cornell. Precision Spectroscopy of Polarized Molecules in an Ion Trap. Science 342, 1220, 2013 K.-K. Ni, R. Norte, D. J. Wilson, J. D. Hood, D. E. Chang, O. Painter, and H. J. Kimble. Enhancement of Mechanical Q Factors by Optical Trapping. Physical Review Letters, 108, 214302, 2012. D. E. Chang, K.-K. Ni, O. Painter, and H. J. Kimble. Ultrahigh-Q mechanical oscillators through optical trapping. New Journal of Physics, 14, 045002, 2012. Y. Zhao, D. J. Wilson, K.-K. Ni, and H. J. Kimble. Suppression of extraneous thermal noise in cavity optomechanics. Optics Express, 20, 3586, 2012. D. Wang, B. Neyenhuis, M. H. G. de Miranda, K.-K. Ni, S. Ospelkaus, D. S. Jin, J. Ye. Direct absorption imaging of ultracold polar molecules. Physical Review A, 81, 061404, 2010. K.-K. Ni, S. Ospelkaus, D. Wang, G. Quemener, B. Neyenhuis, M. H. G. de Miranda, J. L. Bohn, J. Ye, D. S. Jin. Dipolar collisions of polar molecules in the quantum regime. Nature, 464, 1324, 2010. S. Ospelkaus, K.-K. Ni, D. Wang, M. H. G. de Miranda, B. Neyenhuis, G. Quemener, P. S. Julienne, J. L. Bohn, D. S. Jin, J. Ye. Quantum-State Controlled Chemical Reactions of Ultracold Potassium-Rubidium Molecules. Science, 327, 853, 2010. S. Ospelkaus, K.-K. Ni, G. Quéméner, B. Neyenhuis, D. Wang, M. H. G. de Miranda, J. L. Bohn, J. Ye, D. S. Jin. Controlling the Hyperfine State of Rovibronic Ground-State Polar Molecules. Physical Review Letters, 104, 030402, 2010. S. Ospelkaus, K.-K. Ni, M. H. G. de Miranda, B. Neyenhuis, D. Wang, S. Kotochigova, P. S. Julienne, D. S. Jin, J. Ye. Ultracold polar molecules near quantum degeneracy. Faraday Discussions, 142, 351, 2009. K.-K. Ni, S. Ospelkaus, D. J. Nesbitt, J. Ye, and D. S. Jin. A dipolar gas of ultracold molecules. Physical Chemistry Chemical Physics, 11, 9626, 2009. 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. A High Phase-Space-Density Gas of Polar Molecules. Science, 322, 231, 2008. S. Ospelkaus, A. Pe'er, K. -K. Ni, J. J. Zirbel, B. Neyenhuis, S. Kotochigova, P. S. Julienne, J. Ye, and D. S. Jin. Efficient state transfer in an ultracold dense gas of heteronuclear molecules. Nat. Phys., 4, 622, 2008.