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Critical slowing down of multiatom entanglement by Rydberg blockade

Abad, T ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.98.022324
  3. Publisher: American Physical Society , 2018
  4. Abstract:
  5. Laser excitation pulses that lead to perfect adiabatic state transfer in an ensemble of three-level ladder atoms lead to highly entangled states of many atoms if their highest excited state is subject to Rydberg blockade. Solution of the Schrödinger equation shows that it is increasingly difficult to ensure the adiabatic evolution as the number of atoms increases. A diminishing energy gap, significant variations in collective observables, and increased work fluctuations link the critical slowing down of the adiabatic evolution with a quantum-phase-transition-like behavior of the system. © 2018 American Physical Society
  6. Keywords:
  7. Atom lasers ; Atoms ; Laser excitation ; Phase transitions ; Quantum entanglement ; Adiabatic evolution ; Adiabatic state ; Critical slowing down ; Dinger equation ; Excitation pulse ; Multiatom entanglement ; Quantum phase transitions ; Rydberg blockades ; Excited states
  8. Source: Physical Review A ; Volume 98, Issue 2 , 2018 ; 24699926 (ISSN)
  9. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.98.022324