dorsal/arxiv
View SchemaMulti frequency evaporative cooling to BEC in a high magnetic field
| Authors | V. Boyer, S. Murdoch, Y. Le Coq, G. Delannoy, P. Bouyer, A. Aspect |
|---|---|
| Categories | |
| ArXiv ID | physics/0005014 |
| URL | https://arxiv.org/abs/physics/0005014 |
| DOI | 10.1103/PhysRevA.62.021601 |
| Journal | Phys. Rev. A (rapid comm.), 62, 021601(R)1-4 (2000). |
Abstract
We demonstrate a way to circumvent the interruption of evaporative cooling observed at high bias field for $^{87}$Rb atoms trapped in the (F=2, m=+2) ground state. Our scheme uses a 3-frequencies-RF-knife achieved by mixing two RF frequencies. This compensates part of the non linearity of the Zeeman effect, allowing us to achieve BEC where standard 1-frequency-RF-knife evaporation method did not work. We are able to get efficient evaporative cooling, provided that the residual detuning between the transition and the RF frequencies in our scheme is smaller than the power broadening of the RF transitions at the end of the evaporation ramp.
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"abstract": "We demonstrate a way to circumvent the interruption of evaporative cooling\nobserved at high bias field for $^{87}$Rb atoms trapped in the (F=2, m=+2)\nground state. Our scheme uses a 3-frequencies-RF-knife achieved by mixing two\nRF frequencies. This compensates part of the non linearity of the Zeeman\neffect, allowing us to achieve BEC where standard 1-frequency-RF-knife\nevaporation method did not work. We are able to get efficient evaporative\ncooling, provided that the residual detuning between the transition and the RF\nfrequencies in our scheme is smaller than the power broadening of the RF\ntransitions at the end of the evaporation ramp.",
"arxiv_id": "physics/0005014",
"authors": [
"V. Boyer",
"S. Murdoch",
"Y. Le Coq",
"G. Delannoy",
"P. Bouyer",
"A. Aspect"
],
"categories": [
"physics.atom-ph",
"physics.gen-ph"
],
"doi": "10.1103/PhysRevA.62.021601",
"journal_ref": "Phys. Rev. A (rapid comm.), 62, 021601(R)1-4 (2000).",
"title": "Multi frequency evaporative cooling to BEC in a high magnetic field",
"url": "https://arxiv.org/abs/physics/0005014"
},
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