dorsal/arxiv
View SchemaEntanglement generation by adiabatic navigation in the space of symmetric multi-particle states
| Authors | Razmik G. Unanyan, Michael Fleischhauer, Nikolay V. Vitanov, Klaas Bergmann |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205118 |
| URL | https://arxiv.org/abs/quant-ph/0205118 |
| DOI | 10.1103/PhysRevA.66.042101 |
Abstract
We propose a technique for robust and efficient navigation in the Hilbert space of entangled symmetric states of a multiparticle system with externally controllable linear and nonlinear collective interactions. A linearly changing external field applied along the quantization axis creates a network of well separated level crossings in the energy diagram of the collective states. One or more transverse pulsed fields applied at the times of specific level crossings induce adiabatic passage between these states. By choosing the timing of the pulsed field appropriately, one can transfer an initial product state of all N spins into (i) any symmetric state with n spin excitations and (ii) the N-particle analog of the Greenberger-Horne-Zeilinger state. This technique, unlike techniques using pulses of specific area, does not require precise knowledge of the number of particles and is robust against variations in the interaction parameters. We discuss potential applications in two-component Bose condensates and ion-trap systems.
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"abstract": "We propose a technique for robust and efficient navigation in the Hilbert\nspace of entangled symmetric states of a multiparticle system with externally\ncontrollable linear and nonlinear collective interactions. A linearly changing\nexternal field applied along the quantization axis creates a network of well\nseparated level crossings in the energy diagram of the collective states. One\nor more transverse pulsed fields applied at the times of specific level\ncrossings induce adiabatic passage between these states. By choosing the timing\nof the pulsed field appropriately, one can transfer an initial product state of\nall N spins into (i) any symmetric state with n spin excitations and (ii) the\nN-particle analog of the Greenberger-Horne-Zeilinger state. This technique,\nunlike techniques using pulses of specific area, does not require precise\nknowledge of the number of particles and is robust against variations in the\ninteraction parameters. We discuss potential applications in two-component Bose\ncondensates and ion-trap systems.",
"arxiv_id": "quant-ph/0205118",
"authors": [
"Razmik G. Unanyan",
"Michael Fleischhauer",
"Nikolay V. Vitanov",
"Klaas Bergmann"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.66.042101",
"title": "Entanglement generation by adiabatic navigation in the space of symmetric multi-particle states",
"url": "https://arxiv.org/abs/quant-ph/0205118"
},
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