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Y Q Ji1,2, X Q Shao3,4, X X Yi5,6

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Quantum Optics

Background:

  • Entangled W states are crucial for quantum information processing.
  • Scalable preparation of multi-atom W states remains a challenge.

Purpose of the Study:

  • To propose a novel scheme for the large-scale preparation of entangled W states.
  • To utilize the fusion mechanism and quantum Zeno dynamics for state synthesis.

Main Methods:

  • Employing a fusion mechanism involving two atoms from separate W states.
  • Utilizing quantum Zeno dynamics within a vacuum cavity (or cavities).
  • Detecting the two-atom state post-interaction to yield the combined W state.

Main Results:

  • A scheme for generating (n + m - 2)-atom W states from n-atom and m-atom W states is proposed.
  • The method demonstrates robustness against atomic spontaneous emission and cavity decay.
  • Feasibility analysis suggests experimental realizability.

Conclusions:

  • The proposed scheme offers a viable route for scalable W state generation.
  • This method enhances the practical implementation of multi-atom entangled states.
  • The robustness of the scheme is a significant advantage for quantum technologies.