Thermometry via light shifts in optical lattices.

Autor:	McDonald M; Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027-5255, USA., McGuyer BH; Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027-5255, USA., Iwata GZ; Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027-5255, USA., Zelevinsky T; Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027-5255, USA.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2015 Jan 16; Vol. 114 (2), pp. 023001. Date of Electronic Publication: 2015 Jan 14.
DOI:	10.1103/PhysRevLett.114.023001
Abstrakt:	For atoms or molecules in optical lattices, conventional thermometry methods are often unsuitable due to low particle numbers or a lack of cycling transitions. However, a differential spectroscopic light shift can map temperature onto the line shape with a low sensitivity to trap anharmonicity. We study narrow molecular transitions to demonstrate precise frequency-based lattice thermometry, as well as carrier cooling. This approach should be applicable down to nanokelvin temperatures. We also discuss how the thermal light shift can affect the accuracy of optical lattice clocks.
Databáze:	MEDLINE
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