One- and Two-Axis Squeezing via Laser Coupling in an Atomic Fermi-Hubbard Model
| Autor: | T. Hernández Yanes, M. Płodzień, M. Mackoit Sinkevičienė, G. Žlabys, G. Juzeliūnas, E. Witkowska |
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| Rok vydání: | 2022 |
| Předmět: |
Condensed Matter::Quantum Gases
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Quantum Gases (cond-mat.quant-gas) Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences General Physics and Astronomy Condensed Matter::Strongly Correlated Electrons Physics::Atomic Physics Quantum Physics (quant-ph) Condensed Matter - Quantum Gases |
| Zdroj: | Physical Review Letters. 129 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.129.090403 |
| Popis: | We study a production of spin-squeezed states with ultra-cold atomic fermions described by the Fermi-Hubbard model in the Mott insulating phase. We show activation of two twisting mechanisms by a position-dependent laser coupling between internal degrees of freedom of atoms. A single laser coupling simulates the one-axis twisting model with the orientation of the twisting axis determined by the coupling phase. Adding a second laser beam with a properly chosen phase paves the way to simulate the two-axis counter-twisting model, enabling to approach the Heisenberg-limited level of squeezing. |
| Databáze: | OpenAIRE |
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