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Extended rotational coherence of polar molecules in an elliptically polarized trap
Annie J. Park, Lewis R. B. Picard, Gabriel E. Patenotte +3
We demonstrate long rotational coherence of individual polar molecules in the motional ground state of an optical trap. In the present, previously unexplored regime, the rotational…
Coherent optical creation of a single molecule
Yichao Yu, Kenneth Wang, Jonathan D. Hood +7
We report coherent association of atoms into a single weakly bound NaCs molecule in an optical tweezer through an optical Raman transition. The Raman technique uses a deeply bound…
Direct observation of bimolecular reactions of ultracold KRb molecules
Ming-Guang Hu, Yu Liu, David D. Grimes +7
Femtochemistry techniques have been instrumental in accessing the short time scales necessary to probe transient intermediates in chemical reactions. Here we take the contrasting a…
Molecular assembly of ground state cooled single atoms
Lee R. Liu, Jonathan D. Hood, Yichao Yu +5
We demonstrate full quantum state control of two species of single atoms using optical tweezers and assemble the atoms into a molecule. Our demonstration includes 3D ground-state c…
Dipolar Exchange Quantum Logic Gate with Polar Molecules
Kang-Kuen Ni, Till Rosenband, David D. Grimes
We propose a two-qubit gate based on dipolar exchange interactions between individually addressable ultracold polar molecules in an array of optical dipole traps. Our proposal trea…
Building one molecule from a reservoir of two atoms
L. R. Liu, J. D. Hood, Y. Yu +4
Chemical reactions typically proceed via stochastic encounters between reactants. Going beyond this paradigm, we combine exactly two atoms into a single, controlled reaction. The e…
Elliptical polarization for molecular Stark shift compensation in deep optical traps
Till Rosenband, David D. Grimes, Kang-Kuen Ni
In optical dipole traps, the excited rotational states of a molecule may experience a very different light shift than the ground state. For particles with two polarizability compon…
Motional Ground State Cooling Outside the Lamb-Dicke Regime
Yichao Yu, Nicholas R. Hutzler, Jessie T. Zhang +4
We report Raman sideband cooling of a single sodium atom to its three-dimensional motional ground state in an optical tweezer. Despite a large Lamb-Dicke parameter, high initial te…
Ultracold Molecular Assembly
Lee R. Liu, Jessie T. Zhang, Yichao Yu +4
Chemical reactions can be surprisingly efficient at ultracold temperatures ( < 1mK) due to the wave nature of atoms and molecules. The study of reactions in the ultracold regime is…
Laser frequency stabilization based on steady-state spectral-hole burning in Eu:YSiO
Shon Cook, Till Rosenband, David R. Leibrandt
We present and analyze a method of laser frequency stabilization via steady-state patterns of spectral holes in Eu:YSiO. Three regions of spectral holes are created,…
Absolute and relative stability of an optical frequency reference based on spectral hole burning in Eu:YSiO
David R. Leibrandt, Michael J. Thorpe, Chin-Wen Chou +3
We present and analyze four frequency measurements designed to characterize the performance of an optical frequency reference based on spectral hole burning in \EuYSO. The first fr…
Shifts of optical frequency references based on spectral-hole burning in Eu:Y2SiO5
Michael J. Thorpe, David R. Leibrandt, Till Rosenband
Several properties of Eu:Y2SiO5 spectral holes are measured, to assess the suitability of broad-band hole-patterns for use as laser-frequency references. We measure frequency shift…
Frequency-stabilization to 6x10^-16 via spectral-hole burning
Michael J. Thorpe, Lars Rippe, Tara M. Fortier +2
We demonstrate two-stage laser stabilization based on a combination of Fabry- Perot and spectral-hole burning techniques. The laser is first pre-stabilized by the Fabry-Perot cavit…
Observation of the 1S0 - 3P0 clock transition in 27Al+
T. Rosenband, P. O. Schmidt, D. B. Hume +8
We report for the first time, laser spectroscopy of the 1S0 - 3P0 clock transition in 27Al+. A single aluminum ion and a single beryllium ion are simultaneously confined in a linea…
Blackbody radiation shift of the 27Al+ 1S0 - 3P0 transition
T. Rosenband, W. M. Itano, P. O. Schmidt +4
The differential polarizability, due to near-infrared light at 1126 nm, of the 27Al+ 1S0 -> 3P0 clock transition is measured to be 4πε_0 x (1.6 +/- 0.5) x 10^{-31} m^3. This measur…