dorsal/arxiv
View SchemaHigh efficiency symmetric beam splitter for cold atoms with a standing wave light pulse sequence
| Authors | Saijun Wu, Yingju Wang, Quentin Diot, Mara Prentiss |
|---|---|
| Categories | |
| ArXiv ID | physics/0408011 |
| URL | https://arxiv.org/abs/physics/0408011 |
| DOI | 10.1103/PhysRevA.71.043602 |
Abstract
In a recent experiment [1], it was observed that a sequence of two standing wave square pulses can split a BEC at rest into +/- 2 h_bar k diffraction orders with almost 100% efficiency. By truncating the Raman-Nath equations to a 2-state model, we provide an intuitive picture that explains this double square pulse beamsplitter scheme. We further show it is possible to optimize a standingwave multi square pulse sequence to efficiently diffract an atom at rest to symmetric superposition of +/- 2n h_bar k diffraction order with n>1. The approach is considered to be qualitatively different from the traditional light pulse schemes in the Bragg or the Raman-Nath region, and can be extended to more complex atomic optical elements that produce various tailored output momentum states from a cold atom source.
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"abstract": "In a recent experiment [1], it was observed that a sequence of two standing\nwave square pulses can split a BEC at rest into +/- 2 h_bar k diffraction\norders with almost 100% efficiency. By truncating the Raman-Nath equations to a\n2-state model, we provide an intuitive picture that explains this double square\npulse beamsplitter scheme. We further show it is possible to optimize a\nstandingwave multi square pulse sequence to efficiently diffract an atom at\nrest to symmetric superposition of +/- 2n h_bar k diffraction order with n\u003e1.\nThe approach is considered to be qualitatively different from the traditional\nlight pulse schemes in the Bragg or the Raman-Nath region, and can be extended\nto more complex atomic optical elements that produce various tailored output\nmomentum states from a cold atom source.",
"arxiv_id": "physics/0408011",
"authors": [
"Saijun Wu",
"Yingju Wang",
"Quentin Diot",
"Mara Prentiss"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.71.043602",
"title": "High efficiency symmetric beam splitter for cold atoms with a standing wave light pulse sequence",
"url": "https://arxiv.org/abs/physics/0408011"
},
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