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An Ultra-cold Gas of Atoms for GLONASS Time Standards

A. V. Turlapov, T. V. Barmashova, K. A. Martiyanov, V. B. Makhalov

Transactions of IAA RAS, issue 23, 99–106 (2012)

Keywords: atom, gas, cooling, optical trap

Abstract

Technique for deep cooling atomic gas is described. As a result of cooling, one obtains a cloud of gas at the temperature of ~10 nK. The gas is trapped in an optical dipole trap formed by a focus of a laser beam. The method is demonstrated in the example of lithium atoms. While cooling of lithium is complicated, the choice of this atom is motivated by its importance for fundamental studies. These same methods of deep cooling are readily applicable to a wide circle of chemical elements including cesium and rubidium, which are used in atomic clocks. A gas of rubidium or cesium cooled and trapped in the dipole trap may be used for making atomic clocks of reduced size relative to modern ultra-cold atom clocks. This will allow for the use of such clock both in mobile Earth version as well as on board of a space mission. Also the use of the dipole trap makes the design independent of the presence or absence of the gravity.

Citation

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RIS

A. V. Turlapov, T. V. Barmashova,  K. A. Martiyanov, V. B. Makhalov . An Ultra-cold Gas of Atoms for GLONASS Time Standards // Transactions of IAA RAS. — 2012. — Issue 23. — P. 99–106.

@article{turlapov2012,
  abstract = {Technique for deep cooling atomic gas is described. As a result of cooling, one obtains a cloud of gas at the temperature of ~10 nK. The gas is trapped in an optical dipole trap formed by a focus of a laser beam. The method is demonstrated in the example of lithium atoms. While cooling of lithium is complicated, the choice of this atom is motivated by its importance for fundamental studies. These same methods of deep cooling are readily applicable to a wide circle of chemical elements including cesium and rubidium, which are used in atomic clocks. A gas of rubidium or cesium cooled and trapped in the dipole trap may be used for making atomic clocks of reduced size relative to modern ultra-cold atom clocks. This will allow for the use of such clock both in mobile Earth version as well as on board of a space mission. Also the use of the dipole trap makes the design independent of the presence or absence of the gravity.},
  author = {A.~V. Turlapov and T.~V. Barmashova and K.~A. Martiyanov and V.~B. Makhalov},
  issue = {23},
  journal = {Transactions of IAA RAS},
  keyword = {atom, gas, cooling, optical trap},
  pages = {99--106},
  title = {An Ultra-cold Gas of Atoms for GLONASS Time Standards},
  url = {http://iaaras.ru/en/library/paper/759/},
  year = {2012}
}

TY  - JOUR
TI  - An Ultra-cold Gas of Atoms for GLONASS Time Standards
AU  - Turlapov, A. V.
AU  - Barmashova, T. V.
AU  - Martiyanov, K. A.
AU  - Makhalov, V. B.
PY  - 2012
T2  - Transactions of IAA RAS
IS  - 23
SP  - 99
AB  - Technique for deep cooling atomic gas is described. As a result of
cooling, one obtains a cloud of gas at the temperature of ~10 nK. The
gas is trapped in an optical dipole trap formed by a focus of a laser
beam. The method is demonstrated in the example of lithium atoms.
While cooling of lithium is complicated, the choice of this atom is
motivated by its importance for fundamental studies. These same
methods of deep cooling are readily applicable to a wide circle of
chemical elements including cesium and rubidium, which are used in
atomic clocks. A gas of rubidium or cesium cooled and trapped in the
dipole trap may be used for making atomic clocks of reduced size
relative to modern ultra-cold atom clocks. This will allow for the
use of such clock both in mobile Earth version as well as on board of
a space mission. Also the use of the dipole trap makes the design
independent of the presence or absence of the gravity.
UR  - http://iaaras.ru/en/library/paper/759/
ER  -