dorsal/arxiv
View SchemaAntiblockade in Rydberg excitation of an ultracold lattice gas
| Authors | Cenap Ates, Thomas Pohl, Thomas Pattard, Jan M. Rost |
|---|---|
| Categories | |
| ArXiv ID | physics/0605111 |
| URL | https://arxiv.org/abs/physics/0605111 |
| DOI | 10.1103/PhysRevLett.98.023002 |
Abstract
It is shown that the two-step excitation scheme typically used to create an ultracold Rydberg gas can be described with an effective two-level rate equation, greatly reducing the complexity of the optical Bloch equations. This allows us to solve the many-body problem of interacting cold atoms with a Monte Carlo technique. Our results reproduce the Rydberg blockade effect. However, we demonstrate that an Autler-Townes double peak structure in the two-step excitation scheme, which occurs for moderate pulse lengths as used in the experiment, can give rise to an antiblockade effect. It is observable in a lattice gas with regularly spaced atoms. Since the antiblockade effect is robust against a large number of lattice defects it should be experimentally realizable with an optical lattice created by CO$_{2}$ lasers.
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"date_created": "2026-03-02T18:01:06.807000Z",
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"abstract": "It is shown that the two-step excitation scheme typically used to create an\nultracold Rydberg gas can be described with an effective two-level rate\nequation, greatly reducing the complexity of the optical Bloch equations. This\nallows us to solve the many-body problem of interacting cold atoms with a Monte\nCarlo technique. Our results reproduce the Rydberg blockade effect. However, we\ndemonstrate that an Autler-Townes double peak structure in the two-step\nexcitation scheme, which occurs for moderate pulse lengths as used in the\nexperiment, can give rise to an antiblockade effect. It is observable in a\nlattice gas with regularly spaced atoms. Since the antiblockade effect is\nrobust against a large number of lattice defects it should be experimentally\nrealizable with an optical lattice created by CO$_{2}$ lasers.",
"arxiv_id": "physics/0605111",
"authors": [
"Cenap Ates",
"Thomas Pohl",
"Thomas Pattard",
"Jan M. Rost"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevLett.98.023002",
"title": "Antiblockade in Rydberg excitation of an ultracold lattice gas",
"url": "https://arxiv.org/abs/physics/0605111"
},
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