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K-K Ni

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Articles 11
Citations 179
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Recent Articles
1.
Hu M, Liu Y, Grimes D, Lin Y, Gheorghe A, Vexiau R, et al.
Science . 2019 Nov; 366(6469):1111-1115. PMID: 31780555
Femtochemistry techniques have been instrumental in accessing the short time scales necessary to probe transient intermediates in chemical reactions. In this study, we took the contrasting approach of prolonging the...
2.
Liu L, Hood J, Yu Y, Zhang J, Hutzler N, Rosenband T, et al.
Science . 2018 Apr; 360(6391):900-903. PMID: 29650700
Chemical reactions typically proceed via stochastic encounters between reactants. Going beyond this paradigm, we combined exactly two atoms in a single, controlled reaction. The experimental apparatus traps two individual laser-cooled...
3.
Loh H, Cossel K, Grau M, Ni K, Meyer E, Bohn J, et al.
Science . 2013 Dec; 342(6163):1220-2. PMID: 24311686
Polar molecules are desirable systems for quantum simulations and cold chemistry. Molecular ions are easily trapped, but a bias electric field applied to polarize them tends to accelerate them out...
4.
Ni K, Norte R, Wilson D, Hood J, Chang D, Painter O, et al.
Phys Rev Lett . 2012 Sep; 108(21):214302. PMID: 23003262
The quality factor of a mechanical resonator is an important figure of merit for various sensing applications and for observing quantum behavior. Here, we demonstrate a technique to push the...
5.
Zhao Y, Wilson D, Ni K, Kimble H
Opt Express . 2012 Mar; 20(4):3586-612. PMID: 22418119
Extraneous thermal motion can limit displacement sensitivity and radiation pressure effects, such as optical cooling, in a cavity-optomechanical system. Here we present an active noise suppression scheme and its experimental...
6.
Ni K, Ospelkaus S, Wang D, Quemener G, Neyenhuis B, de Miranda M, et al.
Nature . 2010 Apr; 464(7293):1324-8. PMID: 20428166
Ultracold polar molecules offer the possibility of exploring quantum gases with interparticle interactions that are strong, long-range and spatially anisotropic. This is in stark contrast to the much studied dilute...
7.
Ospelkaus S, Ni K, Quemener G, Neyenhuis B, Wang D, de Miranda M, et al.
Phys Rev Lett . 2010 Apr; 104(3):030402. PMID: 20366634
We report the preparation of a rovibronic ground-state molecular quantum gas in a single hyperfine state and, in particular, the absolute lowest quantum state. This addresses the last internal degree...
8.
Ospelkaus S, Ni K, Wang D, de Miranda M, Neyenhuis B, Quemener G, et al.
Science . 2010 Feb; 327(5967):853-7. PMID: 20150499
How does a chemical reaction proceed at ultralow temperatures? Can simple quantum mechanical rules such as quantum statistics, single partial-wave scattering, and quantum threshold laws provide a clear understanding of...
9.
Ni K, Ospelkaus S, Nesbitt D, Ye J, Jin D
Phys Chem Chem Phys . 2009 Oct; 11(42):9626-39. PMID: 19851539
Ultracold polar molecular gases promise new directions and exciting applications in collisions and chemical reactions at ultralow energies, precision measurements, novel quantum phase transitions, and quantum information science. Here we...
10.
Ni K, Ospelkaus S, de Miranda M, Peer A, Neyenhuis B, Zirbel J, et al.
Science . 2008 Sep; 322(5899):231-5. PMID: 18801969
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...