News: Research Highlights

Thu January 1, 2009

Spin gradient thermometry for ultracold atoms in optical lattices

A major goal of current research with ultracold atoms in optical lattices is the realization of magnetic ordering.  This requires temperatures on the order of the second order tunneling rate, J2/U where U is the interaction energy and J the tunneling amplitude.  Such temperatures are about ten times less than 1 nk, the lowest temperature...
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Research Highlights
Thu January 1, 2009

Collision-induced spin depolarization of alkali metal atoms in cold He gas

T.V. Tscherbul, P. Zhang, H.R. Sadeghpour, A. Dalgarno, N. Brahms, Y.S. Au, and J.M. Doyle, Physical Review accepted (2009).
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Research Highlights
Tue January 1, 2008

Crystallization of Strongly Interacting Photons in a Nonlinear Optical Fibre

D. E. Chang, V. Gritsev, G. Morigi, V. Vuletic, M. D. Lukin, and E. Demler, Crystallization of Strongly Interacting Photons in a Nonlinear Optical Fibre, Nature Physics 4, 884-889 (2008).
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Research Highlights
Tue January 1, 2008

Theoretical Program

We have extended our studies of collisional processes in gases at ultracold and cold temperatures in researches that are responsive to experiments. We have calculated the 2Sg+ and  2Su+ potential curves of the molecular ion Yb2+ and we have obtained the cross-sections for charge exchange of its several isotopes of Yb 2 + in the parent...
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Research Highlights
Tue January 1, 2008

Determination of the equation of state of a polarized Fermi gas at unitarity

Y. Shin, Determination of the equation of state of a polarized Fermi gas at unitarity, Phys. Rev. A 77, 041603 (2008).
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Research Highlights
Tue January 1, 2008

Co-trapping of Cold NH Molecules with N Atoms

A frontier in physics with cold polar molecules is the study of paths toward collisional cooling. Here we co-trap an very low polarizability atom along with a very “atom-like” polar molecule. Earlier work with He colliding with NH found that the inelastic processes were highly suppressed due to the small of the NH ground state...
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Research Highlights
Tue January 1, 2008

Formation of Deeply Bound Molecules via chainwise adiabatic passage

E. Kuznetsova, P. Pellegrini, R. Côté, M. D. Lukin, and S. Yelin, Formation of Deeply Bound Molecules via chainwise adiabatic passage, Phys. Rev. A 78, 021402 (2008).
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Research Highlights
Tue January 1, 2008

Realization of a strongly interacting Bose-Fermi mixture from a two-component Fermi gas

Fermions are the fundamental building blocks of matter, whereas bosons emerge as composite particles. The simplest physical system to study the emergence of bosonic behavior is a two-component fermion mixture, where the composite boson is a dimer of the two different fermions.
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Research Highlights
Tue January 1, 2008

High-Sensitivity diamond magnetometer with nanoscale resolution

J. M. Taylor, P. Cappellaro, L. Childress, L. Jiang, D. Budker, P. R. Hmmer, A. Yacoby, R. L. Walsworth, and M. D. Lukin, High-sensitivity diamond magnetometer with nanoscale resolution, Nature Physics 4, 810-816 (2008).
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Research Highlights
Tue January 1, 2008

Magnetic trapping of atomic nitrogen and cotrapping of NH

M. T. Hummon, W. Campbell, H. Lu, Y. Wang, and J. M. Doyle, Magnetic trapping of atomic nitrogen and cotrapping of NH, Phys. Rev. Lett. 78, 050702 (2008).
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News type:
Research Highlights