Details
| Original language | English |
|---|---|
| Article number | 123002 |
| Journal | New journal of physics |
| Volume | 17 |
| Publication status | Published - 4 Dec 2015 |
Abstract
Long-baseline precision tests based on atom interferometry require drastic control over the initial external degrees of freedom of atomic ensembles to reduce systematic effects. The use of optical lattices (OLs) is a highly accurate method to manipulate atomic states in position and momentum allowing excellent control of the launch in atomic fountains. The simultaneous lattice launch of two atomic species, as required in a quantum test of the equivalence principle, is however problematic due to crosstalk effects. In this article, we propose to selectively address two species of alkalines by applying two OLs at or close to magic-zero wavelengths of the atoms. The proposed scheme applies in general for a pair of species with a vastly different ac Stark shift to a laser wavelength. We illustrate the principle by studying a fountain launch of condensed ensembles of 87Rb and 41K initially co-located. Numerical simulations confirm the fidelity of our scheme up to few nm and nm s-1 in inter-species differential position and velocity, respectively. This result is a pre-requisite for the next performance level in precision tests.
Keywords
- atom interferometry, atomic fountains, Bose-Einstein condensates, cold atoms, equivalence principle, optical lattices
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New journal of physics, Vol. 17, 123002, 04.12.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Species-selective lattice launch for precision atom interferometry
AU - Chamakhi, R.
AU - Ahlers, H.
AU - Telmini, M.
AU - Schubert, C.
AU - Rasel, E. M.
AU - Gaaloul, N.
PY - 2015/12/4
Y1 - 2015/12/4
N2 - Long-baseline precision tests based on atom interferometry require drastic control over the initial external degrees of freedom of atomic ensembles to reduce systematic effects. The use of optical lattices (OLs) is a highly accurate method to manipulate atomic states in position and momentum allowing excellent control of the launch in atomic fountains. The simultaneous lattice launch of two atomic species, as required in a quantum test of the equivalence principle, is however problematic due to crosstalk effects. In this article, we propose to selectively address two species of alkalines by applying two OLs at or close to magic-zero wavelengths of the atoms. The proposed scheme applies in general for a pair of species with a vastly different ac Stark shift to a laser wavelength. We illustrate the principle by studying a fountain launch of condensed ensembles of 87Rb and 41K initially co-located. Numerical simulations confirm the fidelity of our scheme up to few nm and nm s-1 in inter-species differential position and velocity, respectively. This result is a pre-requisite for the next performance level in precision tests.
AB - Long-baseline precision tests based on atom interferometry require drastic control over the initial external degrees of freedom of atomic ensembles to reduce systematic effects. The use of optical lattices (OLs) is a highly accurate method to manipulate atomic states in position and momentum allowing excellent control of the launch in atomic fountains. The simultaneous lattice launch of two atomic species, as required in a quantum test of the equivalence principle, is however problematic due to crosstalk effects. In this article, we propose to selectively address two species of alkalines by applying two OLs at or close to magic-zero wavelengths of the atoms. The proposed scheme applies in general for a pair of species with a vastly different ac Stark shift to a laser wavelength. We illustrate the principle by studying a fountain launch of condensed ensembles of 87Rb and 41K initially co-located. Numerical simulations confirm the fidelity of our scheme up to few nm and nm s-1 in inter-species differential position and velocity, respectively. This result is a pre-requisite for the next performance level in precision tests.
KW - atom interferometry
KW - atomic fountains
KW - Bose-Einstein condensates
KW - cold atoms
KW - equivalence principle
KW - optical lattices
UR - http://www.scopus.com/inward/record.url?scp=84954563967&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/17/12/123002
DO - 10.1088/1367-2630/17/12/123002
M3 - Article
AN - SCOPUS:84954563967
VL - 17
JO - New journal of physics
JF - New journal of physics
SN - 1367-2630
M1 - 123002
ER -