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Progress towards macroscopic spin and mechanical superposition via Rydberg interaction

Khazali, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.98.043836
  3. Publisher: American Physical Society , 2018
  4. Abstract:
  5. This paper is a proposal for the generation of a many-body entangled state in atomic and mechanical systems. Here the detailed feasibility study shows that application of a strong Rydberg dressing interaction and a fast bifurcation scheme in a Bose-Einstein condensate of Rb atoms, results in the formation of large cat states. By detailed study of the decoherence effects using the quantum jump Monte Carlo approach and taking into account the obstacles like collective decoherence and level mixing, this proposal predicts the formation of a 700-atom cat state. Subsequent transfer of the generated superposition to far separated mechanical oscillators is proposed, using dipole coupling between Rydberg atoms and charged cantilevers. © 2018 American Physical Society
  6. Keywords:
  7. Atoms ; Bose-Einstein condensation ; Oscillistors ; Statistical mechanics ; Bose-Einstein condensates ; Collective decoherence ; Decoherence effects ; Feasibility studies ; Mechanical oscillators ; Mechanical systems ; Monte Carlo approach ; Rydberg interaction ; Quantum entanglement
  8. Source: Physical Review A ; Volume 98, Issue 4 , 2018 ; 24699926 (ISSN)
  9. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.98.043836