dorsal/arxiv
View SchemaControlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms
| Authors | Olaf Mandel, Markus Greiner, Artur Widera, Tim Rom, Theodor W. Haensch, Immanuel Bloch |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0308080 |
| URL | https://arxiv.org/abs/quant-ph/0308080 |
| DOI | 10.1038/nature02008 |
Abstract
Entanglement lies at the heart of quantum mechanics and in recent years has been identified as an essential resource for quantum information processing and computation. Creating highly entangled multi-particle states is therefore one of the most challenging goals of modern experimental quantum mechanics, touching fundamental questions as well as practical applications. Here we report on the experimental realization of controlled collisions between individual neighbouring neutral atoms trapped in the periodic potential of an optical lattice. These controlled interactions act as an array of quantum gates between neighbouring atoms in the lattice and their massively parallel operation allows the creation of highly entangled states in a single operational step, independent of the size of the system. In the experiment, we observe a coherent entangling-disentangling evolution in the many-body system depending on the phase shift acquired during the collision between neighbouring atoms. This dynamics is indicative of highly entangled many-body states that present novel opportunities for theory and experiment.
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"abstract": "Entanglement lies at the heart of quantum mechanics and in recent years has\nbeen identified as an essential resource for quantum information processing and\ncomputation. Creating highly entangled multi-particle states is therefore one\nof the most challenging goals of modern experimental quantum mechanics,\ntouching fundamental questions as well as practical applications. Here we\nreport on the experimental realization of controlled collisions between\nindividual neighbouring neutral atoms trapped in the periodic potential of an\noptical lattice. These controlled interactions act as an array of quantum gates\nbetween neighbouring atoms in the lattice and their massively parallel\noperation allows the creation of highly entangled states in a single\noperational step, independent of the size of the system. In the experiment, we\nobserve a coherent entangling-disentangling evolution in the many-body system\ndepending on the phase shift acquired during the collision between neighbouring\natoms. This dynamics is indicative of highly entangled many-body states that\npresent novel opportunities for theory and experiment.",
"arxiv_id": "quant-ph/0308080",
"authors": [
"Olaf Mandel",
"Markus Greiner",
"Artur Widera",
"Tim Rom",
"Theodor W. Haensch",
"Immanuel Bloch"
],
"categories": [
"quant-ph",
"cond-mat.soft"
],
"doi": "10.1038/nature02008",
"title": "Controlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms",
"url": "https://arxiv.org/abs/quant-ph/0308080"
},
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