dorsal/arxiv
View SchemaCharacterizing the spin state of an atomic ensemble using the magneto-optical resonance method
| Authors | B. Julsgaard, J. Sherson, J. L. Sorensen, E. S. Polzik |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0307028 |
| URL | https://arxiv.org/abs/quant-ph/0307028 |
| DOI | 10.1088/1464-4266/6/1/002 |
| Journal | J. Opt. B: Quantum Semiclass. Opt., vol. 6, p. 5 (2004) |
Abstract
Quantum information protocols utilizing atomic ensembles require preparation of a coherent spin state (CSS) of the ensemble as an important starting point. We investigate the magneto-optical resonance method for characterizing a spin state of cesium atoms in a paraffin coated vapor cell. Atoms in a constant magnetic field are subject to an off-resonant laser beam and an RF magnetic field. The spectrum of the Zeeman sub-levels, in particular the weak quadratic Zeeman effect, enables us to measure the spin orientation, the number of atoms, and the transverse spin coherence time. Notably the use of 894nm pumping light on the D1-line, ensuring the state F=4, m_F=4 to be a dark state, helps us to achieve spin orientation of better than 98%. Hence we can establish a CSS with high accuracy which is critical for the analysis of the entangled states of atoms.
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"abstract": "Quantum information protocols utilizing atomic ensembles require preparation\nof a coherent spin state (CSS) of the ensemble as an important starting point.\nWe investigate the magneto-optical resonance method for characterizing a spin\nstate of cesium atoms in a paraffin coated vapor cell. Atoms in a constant\nmagnetic field are subject to an off-resonant laser beam and an RF magnetic\nfield. The spectrum of the Zeeman sub-levels, in particular the weak quadratic\nZeeman effect, enables us to measure the spin orientation, the number of atoms,\nand the transverse spin coherence time. Notably the use of 894nm pumping light\non the D1-line, ensuring the state F=4, m_F=4 to be a dark state, helps us to\nachieve spin orientation of better than 98%. Hence we can establish a CSS with\nhigh accuracy which is critical for the analysis of the entangled states of\natoms.",
"arxiv_id": "quant-ph/0307028",
"authors": [
"B. Julsgaard",
"J. Sherson",
"J. L. Sorensen",
"E. S. Polzik"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1464-4266/6/1/002",
"journal_ref": "J. Opt. B: Quantum Semiclass. Opt., vol. 6, p. 5 (2004)",
"title": "Characterizing the spin state of an atomic ensemble using the magneto-optical resonance method",
"url": "https://arxiv.org/abs/quant-ph/0307028"
},
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