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10 papers · 2 filters
Non-Sticking of Helium Buffer Gas to Hydrocarbons
James F. E. Croft, John L. Bohn
Lifetimes of complexes formed during helium-hydrocarbon collisions at low temperature are estimated for symmetric top hydrocarbons. The lifetimes are obtained using a density-of-st…
An atomic clock with room-temperature blackbody Stark uncertainty
K. Beloy, N. Hinkley, N. B. Phillips +7
The Stark shift due to blackbody radiation (BBR) is the key factor limiting the performance of many atomic frequency standards, with the BBR environment inside the clock apparatus…
Systematic evaluation of an atomic clock at 2e-18 total uncertainty
T. L. Nicholson, S. L. Campbell, R. B. Hutson +9
The pursuit of better atomic clocks has advanced many research areas, providing better quantum state control, new insights in quantum science, tighter limits on fundamental constan…
Quantum Defect Theory for Cold Chemistry with Product Quantum State Resolution
Jisha Hazra, Brandon P. Ruzic, John L. Bohn +1
We present a formalism for cold and ultracold atom-diatom chemical reactions that combines a quantum close-coupling method at short-range with quantum defect theory at long-range.…
Multichannel quantum defect theory for ro-vibrational transitions in ultracold molecule-molecule collisions
Jisha Hazra, Brandon P. Ruzic, N. Balakrishnan +1
Multichannel quantum defect theory (MQDT) has been widely applied to resonant and non-resonant scattering in a variety of atomic collision processes. In recent years, the method ha…
Observation of Motion Dependent Nonlinear Dispersion with Narrow Linewidth Atoms in an Optical Cavity
Philip G. Westergaard, Bjarke T. R. Christensen, David Tieri +5
As an alternative to state-of-the-art laser frequency stabilisation using ultra-stable cavities, it has been proposed to exploit the non-linear effects from coupling of atoms with…