dorsal/arxiv
View SchemaEntanglement driven self-organization via a quantum seesaw mechanism
| Authors | Christoph Maschler, Helmut Ritsch, Andras Vukics, Peter Domokos |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0512101 |
| URL | https://arxiv.org/abs/quant-ph/0512101 |
Abstract
Atom-field entanglement is shown to play a crucial role for the onset of spatial self-organization of ultracold atoms in an optical lattice within a high-Q cavity. Like particles on a seesaw, the atoms feel a different potential depending on their spatial distribution. The system possesses two stable configurations, where all atoms occupy either only even or only odd lattice sites. While for a classical cavity field description a distribution balanced between even and odd sites is a stationary equilibrium state at zero temperature, the possibility of atom-field entanglement in a quantum field description yields an instant simultaneous decay of the homogeneous atomic cloud into an entangled superposition of the two stable atomic patterns correlated with different cavity fields. This effect could be generic for a wide class of quantum phase transitions, whenever the quantum state can act back on the control parameter.
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"abstract": "Atom-field entanglement is shown to play a crucial role for the onset of\nspatial self-organization of ultracold atoms in an optical lattice within a\nhigh-Q cavity. Like particles on a seesaw, the atoms feel a different potential\ndepending on their spatial distribution. The system possesses two stable\nconfigurations, where all atoms occupy either only even or only odd lattice\nsites. While for a classical cavity field description a distribution balanced\nbetween even and odd sites is a stationary equilibrium state at zero\ntemperature, the possibility of atom-field entanglement in a quantum field\ndescription yields an instant simultaneous decay of the homogeneous atomic\ncloud into an entangled superposition of the two stable atomic patterns\ncorrelated with different cavity fields. This effect could be generic for a\nwide class of quantum phase transitions, whenever the quantum state can act\nback on the control parameter.",
"arxiv_id": "quant-ph/0512101",
"authors": [
"Christoph Maschler",
"Helmut Ritsch",
"Andras Vukics",
"Peter Domokos"
],
"categories": [
"quant-ph"
],
"title": "Entanglement driven self-organization via a quantum seesaw mechanism",
"url": "https://arxiv.org/abs/quant-ph/0512101"
},
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