dorsal/arxiv
View SchemaEntanglement and decoherence of N atoms and a mesoscopic field in a cavity
| Authors | Tristan Meunier, Arnaud Le Diffon, Clément Rueff, Pascal Degiovanni, Jean-Michel Raimond |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603191 |
| URL | https://arxiv.org/abs/quant-ph/0603191 |
| DOI | 10.1103/PhysRevA.74.033802 |
| Journal | Physical Review A 74 (2006) 033802 |
Abstract
We investigate the behavior of N atoms resonantly coupled to a single electromagnetic field mode sustained by a high quality cavity, containing a mesoscopic coherent field. We show with a simple effective hamiltonian model that the strong coupling between the cavity and the atoms produces an atom-field entangled state, involving N+1 nearly-coherent components slowly rotating at different paces in the phase plane. The periodic overlap of these components results in a complex collapse and revival pattern for the Rabi oscillation. We study the influence of decoherence due to the finite cavity quality factor. We propose a simple analytical model, based on the Monte Carlo approach to relaxation. We compare its predictions with exact calculations and show that these interesting effects could realistically be observed on a two or three atoms sample in a 15 photons field with circular Rydberg atoms and superconducting cavities.
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"abstract": "We investigate the behavior of N atoms resonantly coupled to a single\nelectromagnetic field mode sustained by a high quality cavity, containing a\nmesoscopic coherent field. We show with a simple effective hamiltonian model\nthat the strong coupling between the cavity and the atoms produces an\natom-field entangled state, involving N+1 nearly-coherent components slowly\nrotating at different paces in the phase plane. The periodic overlap of these\ncomponents results in a complex collapse and revival pattern for the Rabi\noscillation. We study the influence of decoherence due to the finite cavity\nquality factor. We propose a simple analytical model, based on the Monte Carlo\napproach to relaxation. We compare its predictions with exact calculations and\nshow that these interesting effects could realistically be observed on a two or\nthree atoms sample in a 15 photons field with circular Rydberg atoms and\nsuperconducting cavities.",
"arxiv_id": "quant-ph/0603191",
"authors": [
"Tristan Meunier",
"Arnaud Le Diffon",
"Cl\u00e9ment Rueff",
"Pascal Degiovanni",
"Jean-Michel Raimond"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1103/PhysRevA.74.033802",
"journal_ref": "Physical Review A 74 (2006) 033802",
"title": "Entanglement and decoherence of N atoms and a mesoscopic field in a cavity",
"url": "https://arxiv.org/abs/quant-ph/0603191"
},
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